Races occasionally treated as separate species, on grounds of differences in breeding season and migratory habits; more recently, case advanced that type of platei is an immature bulleri#R and that a new name is needed; hence referred to as ssp. nov.#R or even as a full, unnamed species#R; adult platei has dark grey hood and indistinct white forecrown vs medium bluish-grey hood and white cap (1); “deeper” bill (= wider#R, but evidence contradictory) (possibly 1); possibly narrower yellow line on bill (ns)#R. Two subspecies recognized.
Food and feeding
Status and conservation
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