The male Blue Rock Thrush is unmistakable, with all blue-grey plumage apart from its darker wings.
Females and immatures are much less striking, with dark brown upperparts, and paler brown scaly underparts.

1st & 2nd photo: Koh Samet, Thailand, 17 December 2009
3rd & 4th photo: Khao Yai National Park, Thailand, 30 December 2009
5th photo: Chiang Mai area, Thailand, 24 December 2009