The Gray-capped Cuckoo is a rare and poorly-known Coccyzus cuckoo of northwestern South America. Its distribution is poorly known. Apparently the Gray-capped Cuckoo breeds in northwestern Peru and in southwestern Ecuador; but it also regularly occurs north to northern Colombia and northern Venezuela, and there are records as well from the Galapagos Islands and from the east side of the Andes. This is a distinctive cuckoo, with the dark gray head contrasting with the rich rufous underparts. It is known primarily from dry deciduous or semi-deciduous woodland. It is generally difficult to spot, remaining within vegetation and moving about sluggishly.