the common hawk-cuckoo hierococcyx varius, popularly known as the brainfever bird, is a medium-sized cuckoo.

animal as asia avian background beak beautiful beauty bird brainfever branch brown color common crown cuckoo evergreen fauna feather forest garden green hawk hawkcuckoo head hierococcyx indi indian known large mediumsized multicolored natural nature ornithology outdoor park perching popularly prey resident resting style subcontinent tree varius white wild wildlife wing