Molecular data suggest an isolated position for this species, but in external morphology it seems closer to Oreopsar bolivianus and Curaeus curaeus; in nesting behaviour and voice it resembles Agelaioides badius. Race megistus sometimes subsumed into sulcirostris. Latter apparently intergrades with nominate in E Brazil (N Minas Gerais, possibly also Goiás). Three subspecies recognized.
Reported also from S Bolivia (Tarija) and extreme N Argentina (extreme N Salta), but racial assignation of these populations doubtful; they may represent feral populations originated from escaped cagebirds.
Food and feeding
Status and conservation
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