Song thrush thrush recognizes the cuckoo's non-mimetic eggs. However, the song thrush does not demonstrate the same aggression toward the adult cuckoo that is shown by the blackbird. The introduced birds in New Zealand, where the cuckoo does not occur, have, over the past 130 years, retained the ability to recognise and reject non-mimetic eggs. Adult birds may be killed by cats, little owls and sparrowhawks, and eggs and nestlings are taken by magpies, jays, and, where present, grey squirrels. As with other passerine birds, parasites are common, and include endoparasites, such as the nematode "Splendidofilaria (Avifilaria) mavis" whose specific name "mavis"
Amami thrush Amami thrush The Amami thrush ("Zoothera dauma major") is a member of the thrush family Turdidae. It is endemic to the islands of Amami Ōshima and Kakeroma island in the northern Nansei Islands of Japan. This large, heavily patterned thrush is similar in appearance to the scaly thrush, to which it is usually considered a subspecies. It has warm olive-brown to buff upperparts and whitish underparts with heavy black scaling. It has twelve tail feathers. The scaly thrush is smaller and has fourteen tail feathers. It has a cheerful song similar to the Siberian thrush. Among thrushes, only the blue