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"
Tickell's thrush wide range of insects, earthworms and berries. They nest in bushes or similar. They do not form flocks but loose groups of two to five spread across tens of meters have been spotted in Nawabganj bird sanctuary, Unnao and SGPGIMS Campus, Lucknow Uttar Pradesh, India. The name commemorates the British ornithologist Samuel Tickell who collected in India and Burma. Tickell's thrush Tickell's thrush ("Turdus unicolor") is a passerine bird in the thrush family Turdidae. It is common in open forest in the Himalayas, and migrates seasonally into peninsular India. Males of this small thrush have uniform blue-grey upperparts, and a