C. glandarius C. jacobinus C. levaillantii C. coromandus Clamator is a genus of large brood-parasitic cuckoos with crests and graduated tails.

The genus was erected by German naturalist Johann Jakob Kaup in 1829 with the great spotted cuckoo (Clamator glandarius) as the type species.

Clamator cuckoos are found in warmer parts of southern Europe and Asia, and in Africa south of the Sahara Desert.

These are birds of warm open scrubby habitats, but some species are at least partially migratory, leaving for warmer and wetter areas in winter.

All the Clamator cuckoos are brood parasites, which lay a single egg in the nests of medium-sized hosts, such as magpies, starlings, shrikes, laughingthrushes, bulbuls and babblers, depending on location.