Catalogue entry no. 256 by Max Loehr:
256 Bird Figure
Strongly translucent, mottled light green and light brown jade. The bird has a hook-shaped beak, a double crest, grooved wings, and a long, bifurcated tail with central and marginal grooves. Behind the claw is a striated, fin-like part, similar to the of No. 252. The crest begins with a spiral, beyond which is a pair of incised curves, which are repeated behind the claws. The engraved lines are identical on the reverse side. Perforated at the breast. Western Chou.