The Sunda Cuckoo occurs from the Malay Peninsula through the Sunda Islands. It eats mainly caterpillars and other insects and is a brood parasite of small leaf-warblers.
Adults have dark ashy-grey upperparts, a blackish-brown tail with white spots and tips, a grey breast, barred white lower underparts, and a yellow eye-ring. Females can show a rufous tinge on the breast; a rufous morph occurs in both sexes.
It inhabits forest, open woodland, and orchards. It feeds mainly on caterpillars and other insects, sometimes takes fruit, and lays eggs in nests of small leaf-warblers; listed host examples include Mountain Leaf Warbler and Sunda Warbler.
An extinction-risk assessment has not been added yet.