below mouth of Rio Maici/Marmelos, right bank of Rio Madeira, Brazil.
Hitherto treated as conspecific with K. orenocensis, but differs in female being whitish below vs sooty-grey (2), and grey above with buffy wing edges vs all sooty-grey (2); male blacker (1); size somewhat smaller (effect size for wing −3.5, score 2). Possible differences in male display behaviour warrant investigation#R. Monotypic.
NE Ecuador (R Napo), NE & E Peru (R Napo, R Marañón, R Amazon; upper R Ucayali#R) to NC Brazil (along R Amazon and R Madeira E to lower R Tapajós).
Food and feeding
Status and conservation
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