Pauxi unicornis koepckeae
Weske and Terborgh, 1971,
Cerros del Sira, Huánuco, Peru.
Has been considered a race of P. pauxi and, until very recently, at least of P. unicornis, but differs from latter in its backward-sloping, ellipsoid vs upright, columnar casque (3); narrow vs broad white tips of outer rectrices, with all-black vs white-tipped central rectrices (2); song consisting of four notes in single phrase over 3–4 seconds vs eight notes forming four phrases with emphasis on last note#R (3); horizontal fanning vs up-and-down pumping of tail in alarm (1). Monotypic.
Slopes of Cerros del Sira, in E Peru (Huánuco).
In 1992, a bird of undetermined affinity was seen in Cerros de Távara, in S Peru, halfway between known ranges of P. koepckeae and P. unicornis, and it has hence been suggested that one or both species may be present on low Andean foothills and outlying ridges from Cerros del Sira S into Bolivian Yungas; however, the Távara record has since been discounted#R.
Food and feeding
Status and conservation
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