Common pochard mainly due to urbanization of the natural habitats and their transformation, as well as due to overhunting. The pochard is one of the species to which the "Agreement on the Conservation of African-Eurasian Migratory Waterbirds" (AEWA) applies. Common pochard The common pochard (; "Aythya ferina") is a medium-sized diving duck. The scientific name is derived from Greek " aithuia" an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin "ferina", "wild game", from "ferus", "wild". The adult male has a long dark bill with a grey band, a red head and neck, a black breast, red eyes and
What Bird is That? kookaburra seated on and within a large red question mark. It contains 36 coloured plates of paintings of Australian birds by the author, as well as several black-and-white photographic plates of habitat. There were numerous reprints and revised editions in various formats produced well into the 1980s. The first edition was sponsored by the Gould League of Bird Lovers of New South Wales of which Cayley was a Council member. In return for its sponsorship, Cayley offered the Gould League four tenths of his 10% book royalty. However, initial sales were slow and in 1935 he sold his entire share