Gray cuckoo with a remarkably long tail. Note dark red facial skin, pale greenish-yellow bill, and dark green gloss on the wings and tail. Chestnut-bellied and Black-bellied Malkohas can be similar; note Green-billed’s thin white border around the facial skin, dark eyes, and overall paler head and breast. Found in lowland and foothill forests and forest edges, as well as dense scrub and cultivated areas. Creeps through foliage like a squirrel. Gives various amphibian-like clucks and croaks.