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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 ...
Channel 4 News is the name of Channel 4's main evening news programme.. The editor is Esme Wren, appointed in 2022. [1] The programme is presented by Krishnan Guru-Murthy, Cathy Newman, Matt Frei, Jackie Long and Fatima Manji and is on the air Monday to Thursday from 7:00 to 7:55 pm, Friday from 7:00 to 7:30 pm, and at variable times at weekends.
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
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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.
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Guineafowl are a group of African, seed-eating, ground-nesting birds that resemble partridges, but with featherless heads and spangled grey plumage. There are 6 species worldwide and 4 species which occur in the Democratic Republic of Congo. Helmeted guineafowl, Numida meleagris; Black guineafowl, Agelastes niger; Plumed guineafowl, Guttera ...