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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 ...
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
Roblox (/ ˈ r oʊ b l ɒ k s / ⓘ, ROH-bloks) is an online game platform and game creation system developed by Roblox Corporation that allows users to program and play games created by themselves or other users. It was created by David Baszucki and Erik Cassel in 2004, and released to the public in 2006. As of August 2020, the platform has ...
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The flame-faced tanager is a distinctive-looking species with black and opalescent-green upperparts, opalescent-green and buff underparts, and a deep-red and yellow face. The subspecies T. p. lunigera lacks the deep red on the face, which is replaced with orangish-red.
Gamefam was founded in 2019 in Los Angeles, California, United States, by Joe Ferencz, the current CEO.Ferencz was originally involved with bringing Hot Wheels into the Forza series and Rocket League, and while doing so, he was observing Roblox's success as a free-to-play video game platform. [6]
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.