18-20 cm (7-8") Fairly common but shy. Boreal forests, tundra scrub; in migration other forests.
Olive-brown on the upperparts, slightly redder on the tail. The underparts are white with gray on the flanks; the breast is greyish brown with darker spots. They have pink legs, a faint grey eye ring, and gray cheeks. Slightly smaller than the very similar Gray-cheeked Thrush but apart from that all but indistinguishable in outward appearance.
Song: a jumbled series of flute-like tones ending on a higher note.