Of those whose habits are known, their main diet is insects. They tend to nest in trees and can lay up to 7 eggs (Coccyzus) although Saurothura only lays 2–3. Only one of the family, the Black-billed cuckoo Coccyzus erythropthalmus (Wilson), is known to be a brood parasite. The nesting habits of the genus Piaya, are virtually unknown.
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