DENDROCYGNA AUTUMNALIS PDF

Origin of type specimen unclear, leading to confusion over correct allocation of nominate subspecies autumnalis; S race has been labelled discolor, with N race . Anguilla; Antigua and Barbuda; Argentina; Aruba; Barbados; Belize; Bolivia, Plurinational States of; Brazil; Canada; Colombia; Costa Rica; Cuba; Dominica;. Black-bellied whistling duck (Dendrocygna autumnalis) brain cholinesterase characterization and diagnosis of anticholinesterase pesticide exposure in wild.

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Widespread and common; northern subspecies alone estimated to number betweenauutmnalis 1, birds, while the southern Will nest on ground or in tree cavities.

They also make use of chimneys, abandoned buildings, or nest boxesthe latter having been increasingly provided to them over recent decades, especially in southeast Texas and Mexico. Your sightings Autumnaliw sightings Add to a lifelist: There are more than 12, regional checklists in Avibase, offered in 9 different taxonomies, including synonyms more than languages. We found that acetylcholinesterase AChE seems to be the predominant ChE form in the biological fraction analyzed.

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The black-bellied whistling duck is quite unique among ducks in their strong monogamous pair-bond. Bibliography Only subscribers are able to see the bibliography. To make the most of all of HBW’s features, discover our subscriptions now! Descriptive notes 43—53 cm; — g nominatemale — g, female — g fulgens. There’s a role for everyone!

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N race is auutmnalis, lacking grey lower breast to hindcollar, but other differences apparently minor. A typical clutch is about 14 eggs; however, pairs sharing nests may produce large, mixed clutches. Bird checklists – taxonomy – distribution – maps – links. Prior tobirds from western Panama north to the southern USA were erroneously referred to as D.

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Over of the whistling ducks have resided in the Gum Slough of Sumter County, Florida for over 2 years. Wikimedia Commons has media related to Dendrocygna autumnalis.

The fulvous whistling duck D. Related taxa Other related concepts Dendrocygna [autumnalis x eytoni] hybrid Dendrocygna [autumnalis x bicolor] hybrid Dendrocygna [autumnalis x viduata] hybrid Autumnalks [arborea x autumnalis] hybrid Other synonyms Arawak: The extensive white in the wings is obvious in flight, less so on the ground; it is formed by the secondary remiges while the primaries are black; the wing-coverts are brown.

Contribute There are a few ways by which you can help the development of this page, such as joining the Flickr group for photos or providing translations of the site in addition languages. Handbook of the Birds of the World Alive.

IUCN Red List of Threatened Species

As its Latin name autumnalis implies, it is commonly seen gleaning recently harvested fields for leftover seeds and invertebrates brought up by the harvesters disturbing the soil. Only subscribers are able to see the bibliography. Avibase is also available in the following languages: Tropical populations are non-migratory.

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Retrieved 26 November Sexes alike, but male may have slightly darker In this study, the brain cholinesterase ChE in the frontal cerebral cortex of autochthonous ducks was characterized.

Public comments No comments yet Only members are able to post public comments. By using this site, you agree to the Terms of Use and Privacy Policy. In other projects Wikimedia Commons Wikispecies. Birds in the extreme northern portions of their range ArizonaLouisianaand parts of Texas move south in winter.

They often feed on submerged vegetation by wading through shallow water. Translate Avibase is also available in the following languages: The face and upper neck are gray, and they sport a thin but distinct white eye-ring. They have been in this area for more than a year. Recommended citation Carboneras, C.

The white wing patch, a tell-tale denrdocygna of this species, is conspicuous in flight.

The ducks, autumnails cavity nesters, prefer the confines of a hollow tree, but will nest on the ground when necessary. The black-bellied whistling duck is a mid-sized waterfowl species. Northernmost breeding areas largely deserted in winter, which birds presumably