Some of the bird species known to have already experienced substantial impacts of climate change. Clockwise from the left: Cassia Crossbill,[1] chinstrap penguins,[2] piping plover,[3] Carnaby's Black Cockatoo,[4] Black-tailed godwit,[5] and Ethiopian Bush-crow.[6]

Significant work has gone into analyzing the effects of climate change on birds.[7] Like other animal groups, birds are affected by anthropogenic (human-caused) climate change. The research includes tracking the changes in species' life cycles over decades in response to the changing world,[8] evaluating the role of differing evolutionary pressures[9] and even comparing museum specimens with modern birds to track changes in appearance and body structure.[10] Predictions of range shifts caused by the direct and indirect impacts of climate change on bird species are amongst the most important, as they are crucial for informing animal conservation work, required to minimize extinction risk from climate change.[11]

Climate change mitigation options can also have varying impacts on birds. However, even the environmental impact of wind power is estimated to be much less threatening to birds than the continuing effects of climate change.[12]


Further information: Climate change and Effects of climate change

Climate change has raised the temperature of the Earth by about 1.1 °C (2.0 °F) since the Industrial Revolution. As the extent of future greenhouse gas emissions and mitigation actions determines the climate change scenario taken, warming may increase from present levels by less than 0.4 °C (0.72 °F) with rapid and comprehensive mitigation (the 1.5 °C (2.7 °F) Paris Agreement goal) to around 3.5 °C (6.3 °F) (4.5 °C (8.1 °F) from the preindustrial) by the end of the century with very high and continually increasing greenhouse gas emissions.[13]: 21 


Physical changes

Museum specimens of Collared flycatcher (top) and Eurasian blackbird (bottom) juveniles compared with modern-day birds. Nesting feathers are replaced with adult plumage earlier, and females now complete the shift earlier than males, while in the past it was the opposite.[10]

Birds are a group of warm-blooded vertebrates constituting the class Aves, characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

Climate change has already altered the appearance of some birds by facilitating changes to their feathers. A comparison of museum specimens of juvenile passerines from 1800s with juveniles of the same species today had shown that these birds now complete the switch from their nesting feathers to adult feathers earlier in their lifecycle, and that females now do this earlier than males.[10] Further, blue tits are defined by blue and yellow feathers, but a study in Mediterranean France had shown that those contrasting colors became less bright and intense in just the period between 2005 and 2019.[14][15]

A study in Chicago showed that the length of birds' lower leg bones (an indicator of body sizes) shortened by an average of 2.4% and their wings lengthened by 1.3%. In the central Amazon area, birds have decreased in mass (an indicator of size) by up to 2% per decade, and increased in wing length by up to 1% per decade, with links to temperature and precipitation shifts. These morphological trends may demonstrate an example of evolutionary change following Bergmann's rule.[16][17][18][19] Across Eurasia, snowfinches became both smaller and darker over the past 100 years.[20]

Rising temperatures due to global warming have also been shown to decrease the size of many migratory birds.[21] In a first study to identify a direct link between cognition and phenotypic responses to climate change, researchers show that size reduction is much more pronounced in smaller-brained birds compared to bigger-brained species.[21] Reduction in body size is a general response to warming temperatures since birds with smaller bodies can dissipate heat easier, helping to cope with the heat-caused stress. Reduced body and brain sizes also lead to reduced cognitive and competitive ability, making the smaller-species birds easier targets for predators.[21] In another study where researchers compared the brain sizes of 1,176 bird species, they found that species that spend more resources on their young have larger brains as adults.[22] Bird species that feed their offspring after hatching have extended durations during which their young can develop their brain, producing more intelligent and larger-brained offspring. Changing environments due to climate change might impact the ability of birds to obtain enough food to sustain their own brains and provide for their young, resulting in reduced brain sizes. Larger-brained and more intelligent birds, such as the New Caledonian crow, may therefore be able to better cope with the challenges posed by climate change.[22]


Differences in an Arctic shorebird phenology between a normal and a hotter year.[23]

For many species, climate change already results in phenological mismatch, which is a phenomenon where the timing of one aspect of a species' yearly cycle ceases to align with another, impairing the species' evolutionary fitness. Events such as reproduction and migration are energetically expensive, and often only occur during a brief period throughout the annual cycle when seasonal prey availability is the highest. However, many prey items differ in energetic and nutritional content and are responding to climate change at different rates than bird life stages.[24] Some common species like pied flycatcher can compensate for a mismatch between their breeding time and population sizes of their preferred prey (caterpillars) by feeding their offspring alternatives like flying insects and spiders, leading to reduced body mass but avoiding a major decrease in reproductive success.[25] Mismatch is a more acute issue for Arctic shorebirds due to the high rate of climate change in the Arctic,[23] leading to events like the 2016 starvation-caused die-off of around 9000 puffins and other shorebirds in Alaska.[26] Long-distance migrating birds also tend to be more sensitive to phenological mismatch, due to the increasing inability to track changes in the breeding environment the further they migrate or to adjust when they can gather food and breed. There is more phenological mismatch occurring during the spring migration, leading to decline in populations in species that have a greater mismatch or phenological asynchrony, compared to species with a lower sensitivity to the changing climate and therefore less need to adjust migratory patterns.[9] If the timing of the highest availability of a bird species' main food source happens earlier than its migration timeline because of warmer weather, then it will likely miss the time for resource gathering.[27]

In response, changes in bird phenology have been observed over the past 50 years, such as the lengthening of spring migrations. Different species can have different triggers for migration, and so the changes in migration patterns can also differ, but for many, there is a correlation between temperatures and otherwise unexplained variations in migration timing over the short term. In general, the earliest individuals are migrating earlier and the latest migrating at a similar time or later than before.[7][28] Wood warblers in North America provide a notable example, as an analysis of 60 years of data shows that every additional of early spring temperatures appears to bring their migrations 0.65 days closer.[8] There has been some scientific debate as to whether such shifts represent an evolutionary adaptive change, or phenotypic plasticity. In other words, just because many individuals in a species have altered their phenology, it does not mean that the change will necessarily help those individuals obtain greater reproductive success and perpetuate the change in behaviour in the next generation, since individual phenotypic changes may be mistimed. This is especially important with climate change, as its variable rate makes it harder to adjust the timing correctly, and it's possible for individuals across multiple generations to respond to such environmental cues in the same manner, but without an ultimate reproductive benefit.[29] Some species which have increased their egg laying dates and advanced spring migration timelines have shown more positive population trends, like some passerines breeding in Great Britain, but this only provides indirect evidence.[9] To date, Common terns are one of a few species where the pressure to migrate earlier (forwards shift of 9.3 days over 27 years) was confirmed to have a heritable component to it.[30]

A great tit individual.

Great tits provide a notable example of the complexities of tracking phenology change. In 2006, population declines were observed due to a >10-day mismatch between their preferred breeding season and peak population spawn of caterpillars, their preferred food source.[31] Consequently, fledglings raised earlier in the season when caterpillar populations are at their peak are in better physiological condition than those raised later in the breeding season, which should act as an evolutionary driver.[32] Yet, caterpillar numbers are affected by more than the climate, with the physical condition of local primary producers like oak trees often being more important for their numbers, and consequently, for when it makes the most sense for great tit individuals to lay their eggs.[33] Nevertheless, by 2021, it was observed that great tit phenology continued to advance even as the late spring warming, and thus the peak of caterpillar numbers, changed much less since 2006. Thus, phenological mismatch for great tits is now substantially lower than before, signifying successful adaptation, but future warming is likely to increase the mismatch again. If the Paris Agreement is fulfilled and the warming peaks at 1.5 °C (2.7 °F) or 2 °C (3.6 °F), then the mismatch will peak around 2050 and then decline again as the species will continue to adapt. Under RCP4.5 and RCP8.5, the two more severe climate change scenarios, average phenological mismatch will once again be at 10 days by the end of the century or even reach the near-unprecedented 15 days, respectively.[34]

Extreme disturbance events

Projections of extreme weather under different levels of global warming.

Besides an ongoing increase in temperature and shifts in precipitation patterns, climate change also increases the frequency of extreme weather events, and those can be particularly damaging to species caught in their path. Carnaby's Black Cockatoo is a species in southwestern Australia which suffered a large decrease in population after just two extreme weather events - a severe heatwave and a severe hail storm between October 2009 and March 2010.[4] In Europe, lesser kestrels seem to adjust to ongoing warming, but have been observed to lose more offspring during the extreme drought months.[35]

Climate change is known to increase the risk and the severity of wildfires in many parts of the world, where it dries out vegetation and reduces the extent of snowpack.[36][37] Wildfires can destroy the habitats of certain birds: after the 2019–20 Australian bushfire season, emu subpopulations on the New South Wales coast are considered at high risk.[38] During the 2020 Western United States wildfire season, one of the only two strongholds of Cassia Crossbill was engulfed in flames.[1] While most bird species can survive the immediate destruction of their habitat by flying away, they can still be heavily affected by wildfire smoke. This is a particular concern for migratory bird species who can be caught in a smoke-filled area right as they are migrating. In 2020, "hundreds of thousands and possibly even up to a million birds have died across at least five U.S. states and in four Mexican states", primarily of migratory species.[39] This "unprecedented" event was connected to wildfire smoke the following year.[40][41]

Shorebird habitats are often negatively affected by sea level rise, both due to the gradual degradation from the ongoing trend, and the sudden storm surges and other extreme events. Later in the century, sea level on the East Coast of the United States may advance high enough that a large hurricane could flood up to 95% of current piping plover habitat in the area, while its ability to shift habitat inland may be constrained by future shoreline development.[3] Gulf Coast populations are also at risk, with a potential 16% loss of habitat by 2100 to gradual inundation alone, and a risk of both extreme storms and further human development of the shoreline.[42] Ironically, inland piping plover populations may benefit from stronger floods powered by climate change, as the open sand shoals they nest in can only avoid vegetation overgrowth if they are flooded regularly, ideally once in four years, which occurred before the European colonization of the Americas but has now been reduced to once per twenty years by shoreline stabilization efforts to protect human property. Consequently, future flooding caused by climate change may be restoring a historical norm for the species, although there is a small risk of climate change either leading to excessive flooding or drying the area under some scenarios.[43]


Areas of North America which are predicted to have species move into them on net (blue) or lose them (red) at 3 °C (5.4 °F) of warming from the preindustrial.

Climate change can make nesting conditions intolerable for various bird species. For instance, shorebirds nest in sand, and the coastal populations of least terns and piping plovers are already known to suffer from sand temperatures increasing and at times getting too hot,[44] while desert birds can outright die of dehydration on unprecedentedly hot days.[45][46] The range of many birds is expected to shift as the result, as "climate change forces species to move, adapt or die."[47] For instance, young house sparrows have been observed to travel further from their parents' nests than before, in response to warming temperatures.[47] Climate change had also been connected with the observed decline in numbers and range reduction of the rusty blackbird, a formerly common yet currently vulnerable North American species.[48] Range shifts are generally increasing in latitude,[7] like with two Asian subspecies of Black-tailed godwit, which are expected to shift closer to the North Pole. Their overall habitat is likely to shrink dramatically to about 16% of its present extent, with all the former high-suitability areas lost.[5] In addition to moving polewards, bird species near the mountains shift to the cooler climate of higher elevations. In India, 66–73% of 1,091 species are expected to move upwards or northwards in response to climate change. Around 60% will see their ranges shrink, with the rest gaining in range.[49]

Besides rising temperatures, climate change can also impact birds' ranges through changes in precipitation. For instance, increased rainfall in some alpine climates is consistent with predictions of effects of climate change on the water cycle. This includes some habitat of savannah sparrows and horned larks, which are known to have higher daily nest mortalities if their environment rained consecutively for more than two days, compared with no rain at all.[50] The Grey-headed robin is restricted to rainforests of the wet tropics region in Australia's northeast Queensland and another population in the New Guinea highlands. It needs cooler temperatures that can only be found in the higher altitudes, yet unlike other species, it cannot keep shifting its range all the way up the mountains, as otherwise it suffers from excessive precipitation. These restrictions on available range make it particularly vulnerable to future climate change.[51] On the other hand, in North America, the southwestern willow flycatcher is expected to lose at least 62% of its population size by 2100 under a high-warming scenario and 36% under an intermediate scenario, but may not suffer any losses under a low-warming scenario, in large part due to its evolutionary potential. However, if the future effects of drought end up particularly severe for the species during its nesting season, it may end up losing the majority of its population size even in the low-warming scenario, and 93% or >99% in the higher-warming scenarios.[52]

Human actions often interact with the effects of climate change. For example, in South American grasslands, the campo miner would lose 77–92% of its area by 2080 under the high-warming scenario and 68–74% under the intermediate scenario, which is particularly concerning due to the lack of protected areas for this species.[53] The pied crow has seen its range decrease in northern Africa but increase in southern Africa due to climate change.[54] Climate change favors the development of forests over grasslands in southern Africa, which provides more trees for nesting. However, their increase in range and density in the south has been helped by electrical power lines. Electrical infrastructure provides additional nesting and perching sites, which may have increased the overall prevalence of the species.[54] And in North America, projected range shifts have been described as "unbelievable" by the experts of National Audubon Society. While one reason is their geographic distance, the other is because for non-migratory species, they can only become reality with assisted migration, as otherwise they wouldn't be able to cross the natural barriers to the newly suitable habitats and would instead be simply extirpated from their old ones.[11]


Increase in extinction risk for US bird species under two different levels of warming.

In 2012, it was estimated that on average, every degree of warming results in between 100 and 500 land bird extinctions. For a warming of 3.5 °C (6.3 °F) by 2100, the same research estimated between 600 and 900 land bird extinctions, with 89% occurring in the tropical environments.[55] A 2013 study estimated that 608–851 bird species (6–9%) are highly vulnerable to climate change while being on the IUCN Red List of threatened species, and 1,715–4,039 (17–41%) bird species are not currently threatened but could become threatened due to climate change in the future.[56]

A 2023 paper concluded that under the high-warming SSP5–8.5 scenario, 51.79% of birds would lose at least some habitat by 2100 as the conditions become more arid, but only 5.25% would lose over half of their habitat due to an increase in dryness alone, while 1.29% could be expected to lose their entire habitat. These figures go down to 38.65%, 2.02% and 0.95% under the "intermediate" SSP2-4.5 scenario and to 22.83%, 0.70% and 0.49% under the high-mitigation SSP1-2.6.[57]

In 2015, it was projected that native forest birds in Hawaii would be threatened with extinction due to the spread of avian malaria under the high-warming RCP8.5 scenario or a similar scenario from earlier modelling, but would persist under the "intermediate" RCP4.5.[58] For the 604 bird species in mainland North America, 2020 research concluded that under 1.5 °C (2.7 °F) warming, 207 would be moderately vulnerable to extinction and 47 would be highly vulnerable. At 2 °C (3.6 °F), this changes to 198 moderately vulnerable and 91 highly vulnerable. At 3 °C (5.4 °F), there are more highly vulnerable species (205) than moderately vulnerable species (140). Relative to 3 °C (5.4 °F), stabilizing the warming at 1.5 °C (2.7 °F) represents a reduction in extinction risk for 76% of those species, and 38% stop being vulnerable.[59][60][61]

A Southern Yellow-billed Hornbill female.

The Miombo Woodlands of South Africa are predicted to lose about 86% of their birds if the warming reaches 4.5 °C (8.1 °F).[62] In 2019, it was also estimated that multiple bird species endemic to southern Africa's Kalahari Desert (Southern Pied Babblers, Southern Yellow-billed Hornbills and Southern Fiscals) would either be all-but-lost from it or reduced to its eastern fringes by the end of the century, depending on the emission scenario. While the temperatures are not projected to become so high as to kill the birds outright, they would still be high enough to prevent them from sustaining sufficient body mass and energy for breeding.[63] By 2022, breeding success of the Southern Yellow-billed Hornbills was already observed to collapse in the hottest, southern parts of the desert. It was predicted that those particular subpopulations would disappear by 2027.[64][65] Similarly, it was found that two Ethiopian bird species, White-tailed Swallow and Ethiopian Bush-crow, would lose 68-84% and >90% of their range by 2070. As their existing geographical range is already very limited, this means that it would likely end up too small to support a viable population even under the scenario of limited climate change, rendering these species extinct in the wild.[66]

King penguins are threatened by climate change in Antarctica.
Climate change is particularly threatening to penguins. As early as in 2008, it was estimated that every time Southern Ocean temperatures increase by 0.26 °C (0.47 °F), this reduces king penguin populations by 9%.[67] Subsequent research found that under the worst-case warming trajectory, king penguins will permanently lose at least two out of their current eight breeding sites, and 70% of the species will have to relocate to avoid disappearance, requiring the movement of 1.1 million pairs.[68][69] A 27-year study of the largest colony of Magellanic penguins in the world, published in 2014, found that extreme weather caused by climate change kills 7% of penguin chicks in an average year, accounting for up to 50% of all chick deaths in some years.[70][71] Since 1987, the number of breeding pairs in the colony has reduced by 24%.[71] Chinstrap penguins are also known to be in decline, mainly due to corresponding declines of Antarctic krill.[72] And it was estimated that while Adélie penguins will retain some of its habitat past 2099, one-third of colonies along the West Antarctic Peninsula (WAP) will be in decline by 2060. Those colonies are believed to represent about 20% of the entire species.[73]

Effects of climate change mitigation activities

Climate change mitigation benefits most bird species in the long run by limiting harmful effects of climate change. However, mitigation strategies may have more complex unintended outcomes. Some provide co-benefits as forest management to thin forest fire fuels may increase bird habitat. Certain cropping strategies for renewable biomass may also increase overall species richness compared to traditional agricultural practices.[7] On the other hand, tidal power systems may affect wader birds,[7] but there's little research due to the limited uptake of this form of renewable energy.

Wind farms are known for being dangerous to birds, and have been found to harm species such as white-tailed eagles and whooper swans. This may be a problem of visual acuity, as most birds have a poor frontal vision. Wind turbine collisions could potentially be reduced if towers were made more conspicuous to birds, or placed in better locations.[7]

In the United States, it has been estimated that between 140,000 and 500,000 birds die every year from collisions with wind turbines, which could increase to 1.4 million if the wind power capacity were increased six-fold. On average, collisions are the least frequent in the Great Plains region, where about 2.92 birds collide with a turbine every year, are higher in the West and East of the country (4.72 and 6.86 birds per turbine annually) and are the highest in California where 7.85 birds collide with each turbine every year. [74]

In general, older wind farms tended to consider birds less in their placement, and this led to greater mortality rates than for wind farms installed after the development of improved guidelines.[75] Newer research shows that in the Indian state of Karnataka, annual fatalities per turbine are at 0.26 per year, which includes both birds and bats.[76] When a coastal wind farm was built on the East Asian-Australasian Flyway, bird community appeared to adjust after one year of operations.[77] However, even the older wind farms were estimated to be responsible for losing less than 0.4 birds per gigawatt-hour (GWh) of electricity generated in 2009, compared to over 5 birds per GWh for fossil fueled power stations.[12]

See also


  1. ^ a b "Nearly Half of the Cassia Crossbill's Population Could Be Lost After Wildfire". Audubon. 2020-10-14. Retrieved 2020-10-26.
  2. ^ Strycker, Noah; Wethington, Michael; Borowicz, Alex; Forrest, Steve; Witharana, Chandi; Hart, Tom; Lynch, Heather J. (10 November 2020). "A global population assessment of the Chinstrap penguin (Pygoscelis antarctica)". Scientific Reports. 10 (1): 19474. Bibcode:2020NatSR..1019474S. doi:10.1038/s41598-020-76479-3. PMC 7655846. PMID 33173126. S2CID 226304009.
  3. ^ a b Seavey, Jennifer R.; Gilmer, Ben; McGarigal, Kevin M. (January 2011). "Effect of sea-level rise on piping plover (Charadrius melodus) breeding habitat". Biological Conservation. 144 (1): 393–401. doi:10.1016/j.biocon.2010.09.017.
  4. ^ a b Saunders, Denis A.; Mawson, Peter; Dawson, Rick (2011). "The impact of two extreme weather events and other causes of death on Carnaby's Black Cockatoo: a promise of things to come for a threatened species?". Pacific Conservation Biology. 17 (2): 141–148. doi:10.1071/pc110141. ISSN 2204-4604.
  5. ^ a b Zhu, Bing-Run; Verhoeven, Mo A.; Velasco, Nicolas; Sanchez-Aguilar, Lisa; Zhang, Zhengwang; Piersma, Theunis (18 June 2022). "Current breeding distributions and predicted range shifts under climate change in two subspecies of Black-tailed Godwits in Asia". Global Change Biology. 28 (18): 5416–5426. doi:10.1111/gcb.16308. PMC 9544271. PMID 35716047.
  6. ^ Bladon, Andrew J.; Donald, Paul F.; Collar, Nigel J.; Denge, Jarso; Dadacha, Galgalo; Wondafrash, Mengistu; Green, Rhys E. (May 19, 2021). "Climatic change and extinction risk of two globally threatened Ethiopian endemic bird species". PLOS ONE. 16 (5): e0249633. Bibcode:2021PLoSO..1649633B. doi:10.1371/journal.pone.0249633. PMC 8133463. PMID 34010302.
  7. ^ a b c d e f Senapathi, Deepa (2010). "Climate Change and Birds: Adaptation, Mitigation & Impacts on Avian Populations. A report on the BOU's Annual Conference held at the University of Leicester, 6–8 April 2010". Ibis. 152 (4): 869–872. doi:10.1111/j.1474-919X.2010.01062.x. ISSN 1474-919X.
  8. ^ a b Horton, Kyle G.; Morris, Sara R.; Van Doren, Benjamin M.; Covino, Kristen M. (19 January 2023). "Six decades of North American bird banding records reveal plasticity in migration phenology". Journal of Animal Ecology. 92 (3): 738–750. doi:10.1111/1365-2656.13887. PMID 36655993. S2CID 255973200.
  9. ^ a b c Franks, Samantha E.; Pearce‐Higgins, James W.; Atkinson, Sian; Bell, James R.; Botham, Marc S.; Brereton, Tom M.; Harrington, Richard; Leech, David I. (2017-11-20). "The sensitivity of breeding songbirds to changes in seasonal timing is linked to population change but cannot be directly attributed to the effects of trophic asynchrony on productivity". Global Change Biology. 24 (3): 957–971. doi:10.1111/gcb.13960. ISSN 1354-1013. PMID 29152888.
  10. ^ a b c Kiat, Y.; Vortman, Y.; Sapir, N. (10 June 2019). "Feather moult and bird appearance are correlated with global warming over the last 200 years". Nature Communications. 10 (1): 2540. doi:10.1038/s41467-019-10452-1. PMC 6557852. PMID 31182713.
  11. ^ a b Kenn Kaufman (March 21, 2018). "Climate Change Could Cause Shifts in Bird Ranges That Seem Unbelievable Today". Audubon. Retrieved 25 June 2023.
  12. ^ a b Sovacool, B. K. (2013). "The avian benefits of wind energy: A 2009 update". Renewable Energy. 49: 19–24. doi:10.1016/j.renene.2012.01.074.
  13. ^ IPCC, 2021: Summary for Policymakers. In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, US, pp. 3−32, doi:10.1017/9781009157896.001.
  14. ^ "Change in bird coloration due to climate change". ScienceDaily. Retrieved 2022-08-04.
  15. ^ López-Idiáquez, David; Teplitsky, Céline; Grégoire, Arnaud; Fargevieille, Amélie; del Rey, María; de Franceschi, Christophe; Charmantier, Anne; Doutrelant, Claire (1 July 2022). "Long-Term Decrease in Coloration: A Consequence of Climate Change?". The American Naturalist. 200 (1): 32–47. arXiv:2211.13673. doi:10.1086/719655. ISSN 0003-0147. PMID 35737990. S2CID 247102554.
  16. ^ Vlamis, Kelsey (4 December 2019). "Birds 'shrinking' as the climate warms". BBC News. Retrieved 5 December 2019.
  17. ^ "North American Birds Are Shrinking, Likely a Result of the Warming Climate". Audubon. 4 December 2019. Retrieved 5 December 2019.
  18. ^ Weeks, Brian C.; Willard, David E.; Zimova, Marketa; Ellis, Aspen A.; Witynski, Max L.; Hennen, Mary; Winger, Benjamin M.; Norris, Ryan (4 December 2019). "Shared morphological consequences of global warming in North American migratory birds". Ecology Letters. 23 (2): 316–325. doi:10.1111/ele.13434. hdl:2027.42/153188. PMID 31800170. S2CID 208620935.
  19. ^ Jirinec, Vitek; Burner, Ryan C.; Amaral, Bruna R.; Bierregaard, Richard O.; Fernández-Arellano, Gilberto; Hernández-Palma, Angélica; Johnson, Erik I.; Lovejoy, Thomas E.; Powell, Luke L.; Rutt, Cameron L.; Wolfe, Jared D. (2021). "Morphological consequences of climate change for resident birds in intact Amazonian rainforest". Science Advances. 7 (46): eabk1743. Bibcode:2021SciA....7.1743J. doi:10.1126/sciadv.abk1743. PMC 8589309. PMID 34767440.
  20. ^ del Mar Delgado, Maria; Bettega, Chiara; Martens, Jochen; Päckert, Martin (6 November 2019). "Ecotypic changes of alpine birds to climate change". Scientific Reports. 9 (1): 16082. doi:10.1038/s41598-019-52483-0. PMC 6834662. PMID 31695069.
  21. ^ a b c "Brainy birds may fare better under climate change: Study is first to directly link cognitive power to a physical response to warming". ScienceDaily. Retrieved 2023-04-02.
  22. ^ a b "Brainy birds may fare better under climate change: Study is first to directly link cognitive power to a physical response to warming". ScienceDaily. 21 March 2023. Retrieved 2023-03-23.
  23. ^ a b Saalfeld, Sarah T.; Hill, Brooke L.; Hunter, Christine M.; Frost, Charles J.; Lanctot, Richard B. (27 July 2021). "Warming Arctic summers unlikely to increase productivity of shorebirds through renesting". Scientific Reports. 11 (1): 15277. doi:10.1038/s41598-021-94788-z. PMC 8316457. PMID 34315998.
  24. ^ Shipley, J. Ryan; Twining, Cornelia W.; Mathieu-Resuge, Margaux; Parmar, Tarn Preet; Kainz, Martin; Martin-Creuzburg, Dominik; Weber, Christine; Winkler, David W.; Graham, Catherine H.; Matthews, Blake (February 2022). "Climate change shifts the timing of nutritional flux from aquatic insects". Current Biology. 32 (6): 1342–1349.e3. doi:10.1016/j.cub.2022.01.057. PMID 35172126. S2CID 246830106.
  25. ^ Samplonius, Jelmer M.; Kappers, Elena F.; Brands, Stef; Both, Christiaan (2016-06-23). "Phenological mismatch and ontogenetic diet shifts interactively affect offspring condition in a passerine". Journal of Animal Ecology. 85 (5): 1255–1264. doi:10.1111/1365-2656.12554. ISSN 0021-8790. PMID 27263989.
  26. ^ Helen Briggs (30 May 2019). "Climate change link to puffin deaths". BBC News. Retrieved 25 June 2023.
  27. ^ Fraser, Kevin C.; Shave, Amanda; de Greef, Evelien; Siegrist, Joseph; Garroway, Colin J. (2019-09-06). "Individual Variability in Migration Timing Can Explain Long-Term, Population-Level Advances in a Songbird". Frontiers in Ecology and Evolution. 7. doi:10.3389/fevo.2019.00324. ISSN 2296-701X.
  28. ^ VAN BUSKIRK, JOSH; MULVIHILL, ROBERT S.; LEBERMAN, ROBERT C. (March 2009). "Variable shifts in spring and autumn migration phenology in North American songbirds associated with climate change". Global Change Biology. 15 (3): 760–771. Bibcode:2009GCBio..15..760V. doi:10.1111/j.1365-2486.2008.01751.x. ISSN 1354-1013. S2CID 84920348.
  29. ^ Charmantier, Anne; Gienapp, Phillip (12 November 2013). "Climate change and timing of avian breeding and migration: evolutionary versus plastic changes". Evolutionary Applications. 7 (1): 15–28. doi:10.1111/eva.12126. ISSN 1752-4571. PMC 3894895. PMID 24454545.
  30. ^ Moiron, Maria; Teplitsky, Céline; Haest, Birgen; Charmantier, Anne; Bouwhuis, Sandra (3 May 2023). "Micro-evolutionary response of spring migration timing in a wild seabird". Evolution Letters. doi:10.1093/evlett/qrad014.
  31. ^ Visser, Marcel E.; Holleman, Leonard J. M.; Gienapp, Phillip (February 2006). "Shifts in caterpillar biomass phenology due to climate change and its impact on the breeding biology of an insectivorous bird". Oecologia. 147 (1): 164–172. Bibcode:2006Oecol.147..164V. doi:10.1007/s00442-005-0299-6. ISSN 0029-8549. PMID 16328547. S2CID 27648066.
  32. ^ Kaliński, Adam; Bańbura, Mirosława; Glądalski, Michał; Markowski, Marcin; Skwarska, Joanna; Wawrzyniak, Jarosław; Zieliński, Piotr; Bańbura, Jerzy (2019-07-08). "Physiological condition of nestling great tits (Parus major) declines with the date of brood initiation: a long term study of first clutches". Scientific Reports. 9 (1): 9843. Bibcode:2019NatSR...9.9843K. doi:10.1038/s41598-019-46263-z. ISSN 2045-2322. PMC 6614424. PMID 31285462.
  33. ^ Cole, Ella F.; Regan, Charlotte E.; Sheldon, Ben C. (27 September 2021). "Spatial variation in avian phenological response to climate change linked to tree health". Nature Climate Change. 11 (10): 872–878. doi:10.1038/s41558-021-01140-4. S2CID 237947627.
  34. ^ Visser, Marcel E.; Lindner, Melanie; Gienapp, Phillip; Lonng, Matthew C.; Jenouvrier, Stephanie (24 November 2021). "Recent natural variability in global warming weakened phenological mismatch and selection on seasonal timing in great tits (Parus major)". Proceedings of the Royal Society B. 147 (1): 164–172. doi:10.1098/rspb.2021.1337. PMC 8611334. PMID 34814747.
  35. ^ Marcelino, J.; Silva, J. P.; Gameiro, J.; Silva, A.; Rego, F. C.; Moreira, F.; Catry, I. (29 April 2020). "Extreme events are more likely to affect the breeding success of lesser kestrels than average climate change". Scientific Reports. 10 (1): 7207. doi:10.1038/s41598-020-64087-0. PMC 7190627. PMID 32350294.
  36. ^ Jones, Matthew; Smith, Adam; Betts, Richard; Canadell, Josep; Prentice, Collin; Le Quéré, Corrine. "Climate Change Increases the Risk of Wildfires". ScienceBrief. Retrieved 16 February 2022.
  37. ^ Dunne, Daisy (14 July 2020). "Explainer: How climate change is affecting wildfires around the world". Carbon Brief. Retrieved 17 February 2022.
  38. ^ Ed Yong (Jan 14, 2020). "The Bleak Future of Australian Wildlife". The Atlantic. Retrieved Feb 8, 2020.
  39. ^ Kevin Johnson (September 16, 2020). "The Southwest Is Facing an 'Unprecedented' Migratory Bird Die-Off". Audubon. Retrieved 25 June 2023.
  40. ^ Joshua Rapp Learn (26 March 2021). "Mass Bird Die-Off Linked to Wildfires and Toxic Gases". EOS. Retrieved 25 June 2023.
  41. ^ Yang, Di; Yang, Anni; Yang, Jue; Xu, Rongting; Qiu, Han (8 March 2021). "Unprecedented Migratory Bird Die-Off: A Citizen-Based Analysis on the Spatiotemporal Patterns of Mass Mortality Events in the Western United States". GeoHealth. 5 (4): e2021GH000395. doi:10.1029/2021GH000395. PMC 8029984. PMID 33855250.
  42. ^ Convertino, Matteo; Bockelie, Adam; Kiker, Gregory A; Muñoz-Carpena, Rafael; Linkov, Igor (2012-10-30). "Shorebird patches as fingerprints of fractal coastline fluctuations due to climate change". Ecological Processes. 1 (1). doi:10.1186/2192-1709-1-9. hdl:1721.1/76705. ISSN 2192-1709.
  43. ^ Zeigler, Sara L.; Catlin, Daniel H.; Brown, Mary Bomberger; Fraser, James D.; Dinan, Lauren R.; Hunt, Kelsi L.; Jorgensen, Joel G.; Karpanty, Sarah M. (11 January 2017). "Effects of climate change and anthropogenic modification on a disturbance-dependent species in a large riverine system". Ecosphere. 8 (1): e01653. doi:10.1002/ecs2.1653. hdl:10919/89387.
  44. ^ Andes, Alicia K.; Sherfy, Mark H.; Shaffer, Terry L.; Ellis-Felege, Susan N. (July 2020). "Plasticity of Least Tern and Piping Plover nesting behaviors in response to sand temperature". Journal of Thermal Biology. 91: 102579. doi:10.1016/j.jtherbio.2020.102579. PMID 32716890.
  45. ^ Meghan Bartels (February 13, 2017). "In a Hotter World, Desert Birds Will Face a Much Higher Risk of Dehydration". Audubon. Retrieved 25 June 2023.
  46. ^ Albright, Thomas P.; Mutiibwa, Denis; Gerson, Alexander. R.; Krabbe Smith, Eric; Talbot, William A.; O’Neill, Jacqueline J.; McKechnie, Andrew E.; Wolf, Blair O. (February 13, 2017). "Mapping evaporative water loss in desert passerines reveals an expanding threat of lethal dehydration". PNAS. 114 (9): 2283–2288. doi:10.1073/pnas.1613625114. PMC 5338552. PMID 28193891.
  47. ^ a b Pärn, Henrik; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik (2012-01-07). "Spatial heterogeneity in the effects of climate and density-dependence on dispersal in a house sparrow metapopulation". Proceedings of the Royal Society B: Biological Sciences. 279 (1726): 144–152. doi:10.1098/rspb.2011.0673. PMC 3223649. PMID 21613299.
  48. ^ McClure, Christopher J. W.; Rolek, Brian W.; McDonald, Kenneth; Hill, Geoffrey E. (January 16, 2012). "Climate change and the decline of a once common bird". Ecology and Evolution. 21 (12): 4342–4352. doi:10.1002/ece3.95. PMC 3298949. PMID 22423330. S2CID 17474939.
  49. ^ Deomurari, Arpit; Sharma, Ajay; Ghose, Dipankar; Singh, Randeep (10 March 2023). "Projected Shifts in Bird Distribution in India under Climate Change". Diversity. 15 (3): 404. doi:10.3390/d15030404.
  50. ^ Martin, Kathy; Wilson, Scott; MacDonald, Elizabeth C.; Camfield, Alaine F.; Martin, Michaela; Trefry, Sarah A. (2017-07-01). "Effects of severe weather on reproduction for sympatric songbirds in an alpine environment: Interactions of climate extremes influence nesting success". The Auk. 134 (3): 696–709. doi:10.1642/AUK-16-271.1. ISSN 1938-4254. S2CID 89912283.
  51. ^ Li, Jin; Hilbert, David W.; Parker, Trevor; Williams, Stephen (8 January 2009). "How do species respond to climate change along an elevation gradient? A case study of the grey-headed robin (Heteromyias albispecularis)". Global Change Biology. 15 (1): 255–267. doi:10.1111/j.1365-2486.2008.01737.x. S2CID 84822516.
  52. ^ Forester, Brenna R; Day, Casey C; Ruegg, Kristen; Landguth, Erin L (February 4, 2023). "Evolutionary potential mitigates extinction risk under climate change in the endangered southwestern willow flycatcher". Journal of Heredity. 21 (12): 4342–4352. doi:10.1093/jhered/esac067. PMC 10287148. PMID 36738446.
  53. ^ Meireles, Ricardo C.; Lopes, Leonardo E.; Brito, Gustavo R.; Solar, Ricardo (February 14, 2023). "The future of suitable habitats of an endangered Neotropical grassland bird: A path to extinction?". Ecology and Evolution. 13 (2): e9802. doi:10.1002/ece3.9802. PMC 9926175. PMID 36818528.
  54. ^ a b Cunningham, S. J.; Madden, C. F.; Barnard, P.; Amar, A. (2016). "Electric crows: powerlines, climate change and the emergence of a native invader". Diversity and Distributions. 22 (1): 17–29. doi:10.1111/ddi.12381. ISSN 1472-4642.
  55. ^ Şekercioğlu, Çağan H.; Primack, Richard B.; Wormworth, Janice (April 2012). "The effects of climate change on tropical birds". Biological Conservation. 148 (1): 1–18. doi:10.1016/j.biocon.2011.10.019.
  56. ^ Foden, Wendy B.; Butchart, Stuart H. M.; Stuart, Simon N.; Vié, Jean-Christophe; Akçakaya, H. Resit; Angulo, Ariadne; DeVantier, Lyndon M.; Gutsche, Alexander; Turak, Emre; Cao, Long; Donner, Simon D.; Katariya, Vineet; Bernard, Rodolphe; Holland, Robert A.; Hughes, Adrian F.; O’Hanlon, Susannah E.; Garnett, Stephen T.; Şekercioğlu, Çagan H.; Mace, Georgina M. (June 12, 2013). "Identifying the World's Most Climate Change Vulnerable Species: A Systematic Trait-Based Assessment of all Birds, Amphibians and Corals". PLOS ONE. 8 (6): e65427. Bibcode:2013PLoSO...865427F. doi:10.1371/journal.pone.0065427. PMC 3680427. PMID 23950785.
  57. ^ Liu, Xiaoping; Guo, Renyun; Xu, Xiaocong; Shi, Qian; Li, Xia; Yu, Haipeng; Ren, Yu; Huang, Jianping (April 3, 2023). "Future Increase in Aridity Drives Abrupt Biodiversity Loss Among Terrestrial Vertebrate Species". Earth's Future. 11 (4): e2022EF003162. Bibcode:2023EaFut..1103162L. doi:10.1029/2022EF003162. S2CID 257934225.
  58. ^ Liao, Wei; Timm, Oliver Elison; Zhang, Chunxi; Atkinson, Carter T.; LaPointe, Dennis A.; Samuel, Michael D. (June 25, 2015). "Will a warmer and wetter future cause extinction of native Hawaiian forest birds?". Global Change Biology. 21 (12): 4342–4352. Bibcode:2015GCBio..21.4342L. doi:10.1111/gcb.13005. PMID 26111019. S2CID 21055807.
  59. ^ Bateman, Brooke L.; Taylor, Lotem; Wilsey, Chad; Wu, Joanna; LeBaron, Geoffrey S.; Langham, Gary (2 July 2020). "North American birds require mitigation and adaptation to reduce vulnerability to climate change". Conservation Science and Practice. 2 (8): e242. doi:10.1111/csp2.242.
  60. ^ Bateman, Brooke L.; Taylor, Lotem; Wilsey, Chad; Wu, Joanna; LeBaron, Geoffrey S.; Langham, Gary (2 July 2020). "Risk to North American birds from climate change-related threats". Conservation Science and Practice. 2 (8): e243. doi:10.1111/csp2.243. S2CID 225387919.
  61. ^ "Survival By Degrees: About the Study". Audubon. Retrieved 25 June 2023.
  62. ^ Warren, R.; Price, J.; VanDerWal, J.; Cornelius, S.; Sohl, H. (March 14, 2018). "The implications of the United Nations Paris Agreement on climate change for globally significant biodiversity areas". Climatic Change. 147 (3–4): 395–409. Bibcode:2018ClCh..147..395W. doi:10.1007/s10584-018-2158-6. S2CID 158490978.
  63. ^ Conradie, Shannon R.; Woodborne, Stephan M.; Cunningham, Susan J.; McKechnie, Andrew E. (June 24, 2019). "Chronic, sublethal effects of high temperatures will cause severe declines in southern African arid-zone birds during the 21st century". PNAS. 116 (28): 14065–14070. Bibcode:2019PNAS..11614065C. doi:10.1073/pnas.1821312116. PMC 6628835. PMID 31235571.
  64. ^ Pattinson, Nicholas B.; van de Ven, Tanja M. F. N.; Finnie, Mike J.; Nupen, Lisa J.; McKechnie, Andrew E.; Cunningham, Susan J. (May 19, 2022). "Collapse of Breeding Success in Desert-Dwelling Hornbills Evident Within a Single Decade". Frontiers in Ecology and Evolution. 10. doi:10.3389/fevo.2022.842264.
  65. ^ Kitanovska, Simona (May 19, 2022). "Colorful Bird Famously Featured in 'The Lion King' Nearly Going Extinct". Newsweek. Retrieved January 23, 2023.
  66. ^ Bladon, Andrew J.; Donald, Paul F.; Collar, Nigel J.; Denge, Jarso; Dadacha, Galgalo; Wondafrash, Mengistu; Green, Rhys E. (May 19, 2021). "Climatic change and extinction risk of two globally threatened Ethiopian endemic bird species". PLOS ONE. 16 (5): e0249633. Bibcode:2021PLoSO..1649633B. doi:10.1371/journal.pone.0249633. PMC 8133463. PMID 34010302.
  67. ^ Le Bohec, C.; Durant, J. M.; Gauthier-Clerc, M.; Stenseth, N. C.; Park, Y.-H.; Pradel, R.; Gremillet, D.; Gendner, J.-P.; Le Maho, Y. (11 February 2008). "King penguin population threatened by Southern Ocean warming". Proceedings of the National Academy of Sciences. 105 (7): 2493–2497. Bibcode:2008PNAS..105.2493L. doi:10.1073/pnas.0712031105. PMC 2268164. PMID 18268328.
  68. ^ Cristofari, Robin; Liu, Xiaoming; Bonadonna, Francesco; Cherel, Yves; Pistorius, Pierre; Maho, Yvon Le; Raybaud, Virginie; Stenseth, Nils Christian; Le Bohec, Céline; Trucchi, Emiliano (26 February 2018). "Climate-driven range shifts of the king penguin in a fragmented ecosystem". Nature Climate Change. 8 (3): 245–251. Bibcode:2018NatCC...8..245C. doi:10.1038/s41558-018-0084-2. S2CID 53793443.
  69. ^ "Antarctica's king penguins 'could disappear' by the end of the century". the Guardian. 2018-02-26. Retrieved 2022-05-18.
  70. ^ "Penguins suffering from climate change, scientists say". The Guardian. January 30, 2014. Retrieved 30 January 2014.
  71. ^ a b Fountain, Henry (January 29, 2014). "For Already Vulnerable Penguins, Study Finds Climate Change Is Another Danger". The New York Times. Retrieved 30 January 2014.
  72. ^ Strycker, Noah; Wethington, Michael; Borowicz, Alex; Forrest, Steve; Witharana, Chandi; Hart, Tom; Lynch, Heather J. (10 November 2020). "A global population assessment of the Chinstrap penguin (Pygoscelis antarctica)". Scientific Reports. 10 (1): 19474. Bibcode:2020NatSR..1019474S. doi:10.1038/s41598-020-76479-3. PMC 7655846. PMID 33173126. S2CID 226304009.
  73. ^ Cimino MA, Lynch HJ, Saba VS, Oliver MJ (June 2016). "Projected asymmetric response of Adélie penguins to Antarctic climate change". Scientific Reports. 6: 28785. Bibcode:2016NatSR...628785C. doi:10.1038/srep28785. PMC 4926113. PMID 27352849.
  74. ^ "Wind Turbines". FWS.
  75. ^ Shepherd, Abby (2022-08-01). "Wind turbines and solar panels can hurt birds and bats. A Missouri group hopes to help". The Beacon. Retrieved 2022-09-24.
  76. ^ Kumara, Honnavalli N.; Babu, S.; Babu Rao, G.; Mahato, Santanu; Bhattacharya, Malyasri; Ranga Rao, Nitin Venkatesh; Tamiliniyan, D.; Parengal, Harif; Deepak, D.; Balakrishnan, Athira L.; Bilaskar, Mahesh (25 January 2022). "Responses of birds and mammals to long-established wind farms in India". Scientific Reports. 12 (1): 1339. doi:10.1038/s41598-022-05159-1. PMC 8789773. PMID 35079039.
  77. ^ Bai, Mei-Ling; Chih, Wen-Chieh; Lee, Pei-Fen; Lien, Yu-Yi (11 March 2021). "Response of waterbird abundance and flight behavior to a coastal wind farm on the East Asian-Australasian Flyway". Environmental Monitoring and Assessment. 193 (4): 181. doi:10.1007/s10661-021-08985-4. PMID 33694006. S2CID 232173283.