A typical Old World cuckoo, with gray-and-white plumage and long wings and tail. A brood parasite that lays its eggs in the nests of many other bird species. Breeds throughout Madagascar in virtually all habitats with woody vegetation. Extremely vocal when breeding during the rainy season, giving a distinctive “do-do-ka-foo” song day and night. Easily identified on Madagascar, where it is the only regularly occurring cuckoo. Elsewhere, extremely similar to Lesser Cuckoo. Many individuals probably indistinguishable, though Madagascar Cuckoo has either weak barring or no barring on the undertail, whereas Lesser Cuckoo always shows strong barring. Similar to Common and African Cuckoos, but smaller, with a much blacker tail and rump.