Cackling goose Cackling goose The cackling goose ("Branta hutchinsii") is a North American bird of the genus "Branta" of black geese, which contains species with largely black plumage, distinguishing them from the grey "Anser" species. The black head and neck with white "chinstrap" distinguish this goose from all other geese except the larger Canada goose ("Branta canadensis") and the similarly sized barnacle goose ("B. leucopsis"). There are up to 5 subspecies of cackling goose, of varying sizes and plumage details. The female looks virtually identical but is slightly lighter and has a different voice. Some are hard to distinguish from the Canada
Apus (genus) Linnaeus in 1758. The name "Apus" is Latin for a swift, thought by the ancients to be a type of swallow with no feet (from Ancient Greek α, "a", "without", and πούς, "pous", "foot"). Before the 1950s, there was some controversy over which group of organism should have the genus name "Apus". In 1801 Bosc gave the small crustacean organisms known today as "Triops" the genus name "Apus", and later authors continued to use this term. Keilhack suggested (in 1909) that this was incorrect since there was already an avian genus named "Apus" by Scopoli in 1777 . It was