| 词条 | Red-billed curassow |
| 释义 |
| name = Red-billed curassow | status = EN | status_system = IUCN3.1 | status_ref = [1] | image =Crax_blumenbachii_(male).jpg | image_caption = Male | genus = Crax | species = blumenbachii | authority = Spix, 1825 | synonyms = }} The red-billed curassow or red-knobbed curassow (Crax blumenbachii) is an endangered species of cracid that is endemic to lowland Atlantic Forest in the states of Espírito Santo, Bahia and Minas Gerais in southeastern Brazil. Its population is decreasing[2] due to hunting and deforestation, and it has possibly been extirpated from Minas Gerais. It is currently being reintroduced to Rio de Janeiro by means of individuals bred in captivity.[3] As suggested by its common name, the male has a largely red bill, but this is lacking in the female. DescriptionThe red-billed curassow is a large bird reaching a length of {{convert|82|to|92|cm|in|0}}. The male has pure black upper parts with a large black crest, and white underparts. There are bright red wattles and knobs at the base of the bill. The male can be distinguished from the wattled curassow (Crax globulosa) by being less bluish-black and from the black curassow (Crax alector) by being less purplish-black. The female lacks the wattles and has black upper parts, a black and white barred crest, reddish-brown wings barred and mottled with black, and reddish-brown or ochre underparts.[4] BehaviourThe red-billed curassow is a largely ground-dwelling bird. It feeds on seeds, fruits, buds and small invertebrates. Males can be heard issuing their loud "booms" in September and October. Females lay a clutch of one to four eggs and the young are fledged by the end of the year.[1] StatusThe red-billed curassow has a very limited range in eastern Brazil and populations there are declining because of habitat loss and hunting. The virgin forest in which it lives has largely been converted to agricultural land and plantations, and the bird is only present now in reserves, and even here it is illegally hunted and captured for the bird trade. There has been a successful captive breeding programme but the International Union for Conservation of Nature rates its conservation status in the wild as "endangered".[1] ==References== 1. ^1 2 {{IUCN|id=22678544 |title=Crax blumenbachii |assessor=BirdLife International |assessor-link=BirdLife International |version=2013.2 |year=2013 |accessdate=6 August 2015}} 2. ^ {{dead link|date=April 2018 |bot=InternetArchiveBot |fix-attempted=yes }}- Plano de Ação para a Conservação do Mutum-do-sudeste Crax blumenbachii. (Management Plan for the Conservation of the Southeastern Curassow Crax blumenbachii) IBAMA. Accessed 2008-10-02 3. ^National Geographic Brasil, ISSN 1517-7211, February 2007, pg.22 4. ^{{cite book|author=Emmet Reid Blake|title=Manual of Neotropical Birds|url=https://books.google.com/books?id=YP0AX3LW8jYC&pg=PA432 |date=1 July 1977 |publisher=University of Chicago Press |isbn=978-0-226-05641-8 |page=432}} External links
6 : Crax|Birds of the Atlantic Forest|Endemic birds of Brazil|Endangered animals|Endangered biota of South America|Birds described in 1825 |
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