The chestnut-breasted malkoha (Phaenicophaeus curvirostris) is a species of cuckoo in the Cuculidae family. Found in Southeast Asia from Myanmar through to eastern Java, the Philippines and Borneo, it is a large cuckoo measuring up to 49 cm (19 in) with grey and dark green upperparts and chestnut underparts, and a large curved pale upper mandible. The male and female are similar in plumage. Unlike many cuckoos, it builds its nest and raises its own young.
Measuring 42–49 cm (17–19 in) in length, the chestnut-breasted malkoha has a large curved pale yellow upper mandible and darker red or black lower mandible, and a bare red patch of rough skin around the eye. The head is grey and wings are dark green fading to blue with age. Its underparts and rump are chestnut, and feet are dark grey. There is little sexual dimorphism as the male and female are similar in plumage, although the male has a pale blue iris and the female yellow.
It is found in Brunei, Indonesia, Malaysia, Myanmar, the western Philippines, and southern Thailand.
Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical mangrove forests. It resides mainly in the middle story in dense foliage. Much of its forest habitat is being cleared. source