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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Black-bellied whistling duck
The habitat is quiet shallow freshwater pondslakesand marshescultivated land or reservoirs with plentiful vegetation, where this duck feeds mainly at night on seeds and other plant food.
Its pairs often stay together for many years, a trait more often associated with geese and swans. There are two subspecieswhich intergrade in Panama:. To register to myAvibase click here. In addition, the potential of the three locally used pesticides and mixtures to inhibit ChE activity was investigated and the exposure of the wild duck population during intensive pesticide applications in rice fields was evaluated. In many areas, nest boxes are provided and readily accepted.
Carbofuran was the most potent ChE inhibitor of D. Black-bellied whistling ducks ingest a wide variety of plant material, but also consume arthropods and aquatic invertebrates when available.
Black-bellied whistling duck Northern subspecies D. There are more than 12, regional checklists in Avibase, offered in 9 dedrocygna taxonomies, including synonyms more than languages.
Dendrocygna autumnalis (Black-bellied Whistling-Duck) – Avibase
We found that acetylcholinesterase AChE seems to be the predominant ChE form in the biological fraction analyzed. When foraging, often in dry fields, also in irrigated autummalis. From Wikipedia, the free encyclopedia.
Views Read Edit View history. They fly with a distinctive profile—neck outstretched with the head held slightly lower than the body. At the heart of their range, there is a tendency to travel in flocks over the winter months, though this behavior is not a true long-range migration but rather local dispersal.
Wikimedia Commons has media related to Dendrocygna autumnalis. Bibliography Only subscribers are able to see the bibliography.
A typical clutch is about 14 dendroycgna however, pairs sharing nests may produce large, mixed clutches.
Males and females look alike; juveniles are similar but have a gray bill and less contrasting belly. 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. Will nest on ground or in tree cavities.
The black-bellied whistling duck Dendrocygna autumnalisformerly also called black-bellied tree duckis a whistling duck that breeds from the southernmost United States and tropical Central to south-central South America. The white wing patch, a tell-tale feature of this species, is conspicuous in flight.
Checklists There are more than 12, regional checklists in Avibase, offered in 9 different taxonomies, including synonyms more than languages. Doksi, Skurki, Wiswisi Swedish: The black-bellied whistling duck is a mid-sized waterfowl species. Tropical populations are non-migratory. To make the most of all of HBW’s features, discover our subscriptions now! Habitat Favours tropical lagoons with some tree cover at margins, being found on lakes, reservoirs, stock