Sometimes placed in genus Agyrtria. Race rondoniae considered a distinct species in HBW on basis of reported sympatry without interbreeding, but fuller evidence needed. Taxonomic confusion has been caused by occurrence of polymorphism within S parts of range: birds from SE Brazil sometimes divided into two distinct races or even species, a green-throated inland one and a white-throated coastal one, but differences attributable to clinal variation within nominate race, and intermediates exist; coastal birds were listed as brevirostris, but this name is now considered to refer to the species formerly known as A. chionopectus (now A. brevirostris). Distinctive race hollandi sometimes considered a separate species, and millerii and nitidifrons have been suggested as constituting two further species. Validity of race kubtchecki has often been questioned, but it appears separable on basis of morphology; emendation to “kubitscheki” (or others) is unjustified, as dedicatee’s name similarly misspelt in original#R. Race viridiceps of A. franciae sometimes placed in present species, but bill-size disparity incompatible with this arrangement. Six subspecies recognized.
Precise limits of distribution in Amazonia and NE Brazil very poorly known.
Food and feeding
Status and conservation
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