220. Ardeola bacchus.
THE CHINESE POND-HERON.
Male 21" ; 11 oz. Legs bright orange. Bill 3 1/10", black, yellow, and pale blue.— In summer: Chin and neck-stripe white. Head and back of neck chestnut. Nuchal crest of long pointed chestnut feathers ; longest 4". Breast and side feathers disintegrated. Back black; rest of bird white.— In winter: Similar to A. grayi. E. Siberia, Japan, China, Burma, Malay Peninsula, Borneo, and Andamans. (B. 1567. S.E. ii. 481.)
Also similar to A. grayi, with back and dorsal train rufous:—
A. ralloides. 21", Head streaked black. From Africa, summering in Mediterranean countries, S. Russia, and Caspian.
A. idae. 18". Head streaked black. From Madagascar. Also similar to A. bacchus, with back and dorsal train black:—
A. speciosa. 15". Head and neck tawny. From Java, Sumatra, Borneo, to Celebes. Also the genus Erythrocnus. With neck-frill full, but without long ornamental plumes. No dorsal train. One species— E. rufiventris, 174", black above, confined to Africa.
Bill shorter than mid toe and claw.