Family Guans, Chachalacas, Curassows (Cracidae)

Least Concern

Razor-billed Curassow (Mitu tuberosum)


Taxonomy

French: Hocco tuberculé German: Amazonashokko Spanish: Paují tuberoso
Taxonomy:

Crax tuberosa

Spix

, 1825,

Rio Solimões, Brazil

.

All members of this genus have been placed, together with the members of Pauxi, and less often Nothocrax, in Crax. In the past, present species often considered conspecific with M. mitu, but genetic data suggest that it is most closely related to M. salvini and Pauxi unicornis#R. Has hybridized in captivity with several other species of curassow, including Crax alberti; at least some of these hybrids were fertile. Reported as marginally sympatric with M. salvini at some localities in Peru. Monotypic.

Distribution:

Amazonia in extreme SE Colombia (Amazonas), Brazil (almost exclusively S of Amazon, and E to Maranhão), Peru (S of R Marañón) and Bolivia (Pando, Beni, La Paz, Cochambamba and Santa Cruz).

Descriptive notes

83–89 cm; 2500–3860 g (male), 2320 g (one female). Well-developed crest usually carried depressed; chestnut ventral region and whitish tail tips. Massive, casque-... read more

Voice

Like M. salvini and perhaps Nothocrax, both sexes sing (albeit females much more... read more

Habitat

Forest, including humid terra firme forest, gallery and Guadua bamboo-dominated... read more

Food and feeding

Mainly fruits; also seeds and leaves; occasionally insects and other animals, including one caecilian (Gymnophiona) and frogspawn laid in... read more

Breeding

Season Nov–Feb in NE Peru, but commences in Aug–Dec in SE of same country. Nest placed in trees, cup-shaped construction of... read more

Movements

Presumably sedentary, although studies in SE Peru suggest that home range size is at least 150 ha,... read more

Status and conservation

Not globally threatened (Least Concern). Considered fairly common in many parts of Brazilian range, including Amazônia (Tapajós) National Park, Pará; not... read more

Recommended citation

del Hoyo, J. & Kirwan, G.M. (2018). Razor-billed Curassow (Mitu tuberosum). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53307 on 25 June 2018).