Either of two thrush species (family Turdidae). The American robin (Turdus migratorius), 10 in. (25 cm) long, with gray-brown upper parts and a rusty breast, lives in deciduous forests and sometimes towns. It eats earthworms, insects, and berries. The European robin, or robin redbreast (Erithacus rubecula), breeds throughout Europe, western Asia, and part of North Africa. It is 5.5 in. (14 cm) long, with olive-brown upper parts, white belly, and rusty-orange face and breast.