Cuculus canorus and trogons, is often lined with the broken-off hairs of these caterpillars, which, penetrating the cuticle, assume a regular spiral arrangement, due to the rotatory motion of the muscles of the gizzard.
- Cuculus, Trogon, Bucco, Crotophaga.
" Coucous "-Cuculus, Linn.
Genera: (a) Trochilus, Certhia, Upupa, Buphaga, Sitta, Oriolus, Coracias, Gracula, Corvus, Paradisea; (b) Ramphastos, Trogon, Psittacus, Crotophaga, Picus, Yunx, Cuculus, Bucco; (c) Buceros, Alcedo, Merops, Todos.
A variety of the cuckoo called hototogisu (Cuculus poliocephalus) in imitation of the sound of its voice, is heard as an accompaniment of the uguisu, and there are also three other species, the kakkodori (Cuculus canorus), the Isutsu-dori (C. himalayanus), and the masuhakari, orju-ichi (C. hyperythrus).