Brant (goose) the "Agreement on the Conservation of African-Eurasian Migratory Waterbirds" applies. "Branta" is a Latinised form of Old Norse "brandgás", "burnt (black) goose", and "bernicla" is the medieval Latin name for the barnacle. The brant and the similar barnacle goose were previously considered one species, formerly believed to be the same creature as the crustacean. That myth can be dated back to at least the 12th century. Gerald of Wales claimed to have seen these birds hanging down from pieces of timber, William Turner accepted the theory, and John Gerard claimed to have seen the birds emerging from their shells. The
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