title: SEASONAL HISTOLOGICAL CHANGES IN THE TESTES OF COPSYCHUS SAULARIS (AVES, PASSERES, TURDIDAE).
mesh_terms: D000818:Animals; D001717:Birds; D006654:Histology, Comparative; D006801:Humans; D008297:Male; D046109:Passeriformes; D010507:Periodicity; D010828:Physiology, Comparative; D012098:Reproduction; D012106:Research; D012621:Seasons; D020308:Songbirds; D013737:Testis
keywords: BIRDS; EXPERIMENTAL LAB STUDY; HISTOLOGY, COMPARATIVE; PERIODICITY; PHYSIOLOGY, COMPARATIVE; REPRODUCTION; SEASONS; TESTIS