Bearded wood partridge
Illustration by John Gould & H. C. Richter
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Galliformes
Family: Odontophoridae
Genus: Dendrortyx
Species:
D. barbatus
Binomial name
Dendrortyx barbatus
Gould, 1846

The bearded wood partridge (Dendrortyx barbatus) is a bird species in the family Odontophoridae, the New World quail. It inhabits the Sierra Madre Oriental of Mexico.[2]

Taxonomy and systematics

The bearded wood partridge shares the genus Dendrortyx with two other species, all of which appear to be quite distinct from each other.[3] It is monotypic.[4]

Description

The bearded wood partridge is 33 to 35.5 cm (13.0 to 14.0 in) long and weighs between 405 and 459 g (14.3 and 16.2 oz). Adults have bluish gray cheeks, neck, and upper chest. There is a red patch around the eye. The crown is buff and has a small crest. The nape and chest are cinnamon, with red striations on the nape and sides of the chest. The back is a mix of buff, browns, and grays. Immatures are similar to the adults but their chest is duller and the flanks have brown bars.[3]

Distribution and habitat

The bearded wood partridge has a discontinuous range in the central part of Mexico's Sierra Madre Oriental. The Santo Domingo River in northern Oaxaca and western slope of the Sierra Madre Oriental act as biogeographic barriers.[5][6] It inhabits the interiors and edges of humid evergreen montane forest and pine-oak forest, both primary and secondary. It is also found in gardens and sometimes in farmland. It is often restricted to narrow riparian zones.[3]

Behavior

Feeding

The bearded wood partridge forages on the ground. Its diet includes seeds, fruits, buds, tubers, and insects.[3]

Breeding

Little is known about the bearded wood partridge's breeding phenology. Is is reported to breed between April and June. The male makes a dome-shaped nest with a tunnel entrance. The clutch size is usually five.[3]

Vocalization

Dickcissel male perched on a metal pole singing, with neck stretched and beak open.

Songs and calls

The bearded wood-partridge's song is "a series of loud, rollicking whistles, repeated rapidly and often given in duet". The sexes' songs are similar but the female's is quieter. The song is mostly given at dawn and dusk. Groups sing to maintain contact.[3]

Status

The IUCN has assessed the bearded wood partridge as Vulnerable since 2000 after initially rating it Critically Endangered. "[S]urveys have found this species to be more widespread and numerous than previously thought, however it still has a highly fragmented range and small population undergoing a continuous decline."[1]

References

  1. ^ a b BirdLife International (2020). "Bearded Wood-partridge Dendrortyx barbatus". IUCN Red List of Threatened Species. 2020. Retrieved 10 September 2021.
  2. ^ Mota-Vargas, Claudio; Galindo-Gonzalez, Jorge; Rojas-Soto, Octavio (2017). "Crumble analysis of the historic sympatric distribution between Dendrortyx macroura and D-barbatus (Aves: Galliformes)". PLOS ONE. 12 (9): e0183996. Bibcode:2017PLoSO..1283996M. doi:10.1371/journal.pone.0183996. PMC 5580918. PMID 28863140.
  3. ^ a b c d e f Eitniear, J. C. (2020). Bearded Wood-Partridge (Dendrortyx barbatus), version 1.0. In Birds of the World (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.bewpar1.01 retrieved September 10, 2021
  4. ^ Gill, F.; Donsker, D.; Rasmussen, P. (July 2021). "IOC World Bird List (v 11.2)". Retrieved July 14, 2021.
  5. ^ Mota-Vargas, Claudio; Rojas-Soto, Octavio R.; Lara, Carlos; Castillo-Guevara, Citlalli; Ballesteros-Barrera, Claudia (2013). "Geographic and ecological analysis of the Bearded Wood Partridge Dendrortyx barbatus: Some insights on its conservation status". Bird Conservation International. 23 (3): 371–385. doi:10.1017/S0959270912000329.
  6. ^ Eitniear, Jack C.; Sergio, Aquilar R.; Gonzalez, Victor; Roberto, Pedraza R.; Baccus, John T. (2000). "New Records of Bearded Wood-Partridge, Dendrortyx barbatus, (Aves: Phasianidae) in Mexico". The Southwestern Naturalist. 45 (2): 238–241. doi:10.2307/3672468. JSTOR 3672468.