Barking Imperial-Pigeon

A dark brownish-gray cuckoo with an unusually long tail and barred underparts. Found in the understory and at middle levels of humid forest at low and middle elevations. Shy and retiring, most easily found by voice. Very similar to Olive Long-tailed Cuckoo and best separated by voice, but also identified by darker upperparts, broader barring on the underparts, and richer rufous on the undertail. There are two main vocalizations: a quick series of three rising whistles, and a long, rapid series of whistles that slows and falls slightly toward the end. In the far western part of the range, the three whistles are slow and each one is progressively higher in pitch; elsewhere, the whistles are fast and identical. 

This warm brown forest dweller is similar to many other foliage-gleaners and treehunters. Look for the relatively bright orangey throat with streaking on the breast. The bill is all dark. Also note the plain head without an eyebrow. Found in montane forests from 900 to 2500m, where it moves at low to middle heights. Seen singly or in pairs, often with a mixed-species flock. Song is a harsh series of paired notes.

A variable green-pigeon of subtropical and tropical lowland broadleaf evergreen forests. Ryukyu subspecies readily approachable, sometimes found in parks and gardens; Taiwan subspecies more timid. Ryukyu and Taiwan subspecies sometimes considered separate species, as Taiwan birds are much smaller and have a rufous cap. Similar to White-bellied Green-Pigeon, but feathers around the legs never white, face less yellowish, and white edges of undertail coverts narrower. Song a low, whistling "poo-aa-poooo", rising and trilling at end, recalling a bamboo flute.