P. L. Sclater and Salvin, 1869,
Cumbre de Valencia, Carabobo, Venezuela.
Probably sister to S. scansor (which see). Pattern of geographical variation generally conforms to Gloger’s Rule, with plumage darker in warm, humid areas than in colder, drier ones. Within nominate race, birds in Trinidad and Tobago are significantly smaller than those of mainland. Racial identity of birds from SW Brazil (Acre, N Rondônia) and others reported from S Bolivia (Tarija) uncertain; presumed to belong to albicollis. Proposed race kunanensis of Sierra de Perijá (Colombia–Venezuela border) said to have belly more greenish-olive, remiges more olivaceous and rectrices blackish#R#R, but doubtfully distinguishable from nominate. Original description of species in 1868 issue of journal, but not published till Apr 1869#R#R. Six subspecies recognized.
Food and feeding
Status and conservation
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