Race berlepschi may represent a separate species, differing somewhat in plumage (much paler below; score 2) and also voice (on average, notes cover a narrower frequency range, and song phrase more often has a rising or falling pitch; score 2)#R; has been suggested that intergradation between it and nominate race has increased in S Brazil (S Mato Grosso) as forests that once isolated races have been cleared, but other authors comment that no intermediate specimens known; more study needed in presumed contact zone in vicinity of border between Mato Grosso and E Bolivia (Santa Cruz). Three subspecies recognized.
Food and feeding
Status and conservation
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