Re-discovered in 1994, the grey-crowned crocias is a small, slim bird occupying a tiny range in an ecologically fragile region of Vietnam (2) (3). It has a conspicuous grey crown and nape, for which it gets its name, and a distinctive black mask, extending from the bill past the eyes (2) (4). The underparts of the body, from the chin to the belly, are spotless white, except for black streaks on the flanks. Reddish-brown upperparts contrast with the white underneath, but share similar black streaking. The wing feathers are mostly grey, except the primaries which are black with white tips. The tail feathers are also grey, but, as with the primaries, are white towards the tips (2).
- Length: 22 cm (2)