Grey-winged Trumpeter

Grey-winged Trumpeter
At the US National Aviary
Conservation status
Least Concern (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Gruiformes
Family:	Psophiidae
Genus:	Psophia
Species:	P. crepitans
Binomial name
Psophia crepitans Linnaeus, 1758

The Grey-winged Trumpeter (Psophia crepitans) is a member of a small family of birds, the Psophiidae. It is found in the northern Amazon Rainforest and Guiana Shield in tropical South America. Unlike all other trumpeters, the rump and back are grey in the Grey-winged Trumpeter.

It has two subspecies separated by the Rio Negro: The nominate from the Guiana Shield, and napensis from the north-western Amazon. Although their plumage differences are relatively minor, some have suggested they should be treated as separate species (instead of subspecies) due to genetic differences.^[1] Genetic evidence also suggests ochroptera, traditionally considered a subspecies of the Pale-winged Trumpeter, actually is closer to the Grey-winged Trumpeter.^[1]

The Grey-winged Trumpeter is a dumpy, guineafowl-like bird with a long neck and legs, and short yellow chicken-like bill. It is 48–56 centimetres (19–22 in) long and 1.3 kilograms (2.9 lb) in weight. The soft plumage is mainly black, but the feathers of the inner wing are grey.

These are gregarious forest birds which nest in hollow trees, laying 3-4 white eggs that are incubated by all members of a group of five or more birds. When not breeding, the flocks may number 50 or more. Their food is insects and fruit, picked off the ground. They are weak fliers, and will run by preference.

The Grey-winged Trumpeter's song is a low humming, but its call, as its name suggests, is a very loud JEEK or honking TZAAK. This bird is kept as a pet by Amerindians, since it is easily tamed, hunts snakes, and is a very efficient sentinel, with its unmissable alarm call.

Gallery

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  A group in French Guiana

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  Grey wings

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  Another view of the bird's wings

References

1. ^ ^{a b} Ribas, Aleixo, Nogueira, Miyaki and Cracraft. 2011. A palaeobiogeographic model for biotic diversification within Amazonia over the past three million years. Proceedings of the Royal Society

• BirdLife International (2004). Psophia crepitans. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern
• Birds of Venezuela by Hilty, ISBN 0-7136-6418-5

External links

• Grey-winged Trumpeter videos, photos & sounds on the Internet Bird Collection
• Stamps (for Ecuador) with RangeMap(~accurate)
• Photo; Article planktonik.com
• Photo-High Res; Article & Analysis www1.nhl.nl—contains "Range Study Map", High Res photos(6), etc.
• "Gray-winged Trumpeter" photo gallery VIREO Photo-High Res