O. poliocephala and O. leucogastra formerly considered races of present species; in Chiapas (S Mexico), range meets, and may slightly overlap with, those of both, but hybridization not recorded. Isolated population in NW Costa Rica (Guanacaste), currently included in nominate but sometimes assigned to O. leucogastra, may represent an undescribed race of present species; in plumage coloration and voice it is closer to present species than to O. leucogastra#R#R, but with body distinctively more rufous than other races. Race intermedia sometimes subsumed within nominate vetula. Population of dry interior valley of Chiapas, S Mexico, was separated in race vallicola, but differences slight and not usually recognized; likewise, proposed races jalapensis and plumbiceps both synonymized with nominate. Five subspecies currently recognized.
Food and feeding
Status and conservation
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