Search results
Results from the WOW.Com Content Network
African black duck. The African black duck is a black duck with pronounced white marks on its back, a dark bill, and orange legs and feet. A purpish-blue speculum is often visible, especially in flight. It lives in central and southern Africa. It is also known as the black river duck, or (A. s. leucostigma) West African black duck or Ethiopian ...
Black duck may refer to three dabbling ducks: African black duck, Anas sparsa; American black duck, Anas rubripes; Pacific black duck, Anas superciliosa;
A. African barred owlet; African black duck; African black swift; African blue tit; African broadbill; African chaffinch; African citril; African collared dove
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
The retention of ancestral genetic variation can be caused by incomplete lineage sorting (ILS) and introgression after secondary contact. These two factors can cause genetic variation to be shared between closely related species which is possibly why an American black duck or a Mottled duck (Anas fulvigula) may have notable white on its speculum or a Mexican duck may have flecks of green.
This is a list of the bird species recorded in South Sudan.The avifauna of South Sudan include a total of 831 species. This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of The Clements Checklist of Birds of the World, 2022 edition.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
This is a list of the bird species recorded in Africa.The area covered by this list is the Africa region defined by the American Birding Association's listing rules. [1] In addition to the continent itself, the area includes Madagascar, Mauritius, Rodrigues, Seychelles, Cape Verde, the Comoro Islands, Zanzibar and the Canary Islands, São Tomé and Príncipe and Annobón in the Gulf of Guinea.