National Geographic : 1936 Jun
FLYCATCHERS AND OTHER FRIENDS IN FEATHERS (Q JNational (;eographic society AMERICAN CUCKOOS ARE WHOLLY UNLIKE THE BIRD OF THE CUCKOO CLOCK Instead of a cheery cuckoo, their "'song" is an unmusical succession of chucks and clucks. Here the BLACK-BILLED eats tent caterpillars while the YELLOW-BILLED utters a guttural note. In contrast to the European cuckoo, which habitually lays its eggs in the nests of other birds, they normally hatch and rear their own young. The COPPERY-TAILED TROGON, of red breast, lives along the Mexican border, and is a relative of the gorgeous quetzal, worshiped by the Maya and Aztecs.