Very similar to Common Nightingale, but more dusky brown (not reddish-brown) with a mottled brown breast (not plain and sandy). Their songs can be confusingly similar, but the Thrush Nightingale is more monotonous, less varied, and slower, resembling that of Song Thrush. Starts with whistling "wiiit-wiiit-wiiit," then gives a "chuuk-u-chuuk-u" followed by a rattle. Found in thick, damp, deciduous forest as well as well-wooded parks and gardens. Feeds on invertebrates and berries.