The Naumann's thrush (Turdus naumanni) is a medium-sized, stocky member of the thrush family, Turdidae. It exhibits a pale brown back and head, with a face, breast, flank spots, and rump that are tinged reddish. The belly and undertail are white, creating a striking contrast. The underwing is a notable reddish brown, and a pale supercilium graces its expression.
When identifying Naumann's thrush, look for the reddish hues on the face, breast, and flanks, as well as the white belly and undertail. The bird's structure is reminiscent of a small fieldfare. Males and females are fairly similar in appearance, though immatures display a weaker patterning.
Naumann's thrush favors open woodland areas for breeding, differing from its close relative, the dusky thrush, which prefers more mountainous and tundra-edge habitats.
Breeding from central Siberia to North Manchuria, Amurland, and Sakhalin, Naumann's thrush is a strongly migratory species. In winter, it travels to South Asia and Southeast Asia, with China, Korea, and neighboring countries being principal destinations. It is also known as a rare vagrant to Western Europe.
This species is known to nest in trees, where it lays 3-5 eggs in an untidy but neatly lined nest. During migration and in their wintering grounds, Naumann's thrushes may form small flocks.
The song of Naumann's thrush may be distinct from the simple fluted or whistling redwing-like song of the dusky thrush, offering a delightful auditory clue for the keen birdwatcher.
Naumann's thrush breeds in open woodlands, constructing nests in trees where it lays a clutch of 3-5 eggs.
The dusky thrush (T. eunomus) is closely related and sometimes confused with Naumann's thrush. However, the dusky thrush has a darker brown back and rump, and the face, breast, and flank spots are black, not reddish.
An omnivorous bird, Naumann's thrush has a varied diet that includes a wide range of insects, particularly mosquitoes, earthworms, and an assortment of berries.
The Naumann's thrush is currently listed as Least Concern on the IUCN Red List, indicating that, at present, there are no immediate threats to its population numbers.