a pair of grey-bellied cuckoo birds perched on a chopped tree trunk

avian aviary beak bellied belly bill billed bird black chopped common cuckoo cuckoos dark duo egg eggs fallen feather feathers female flight flu fly forage forager foragers free freedom gray grey h1n1 h5n1 habitat habitats influenza insectivore insectivores lay leaf leaves light long male nest nesting nests new pair pairs perch perched plant plants plumage red species stand standing tail tailed tree trees tropic tropical tropics trunk trunks twin two watch watching wing wings world