Specific Status and Behavior of Cymbilaimus sanctaemariae, the Bamboo Antshrike, from Southwestern Amazonia

Abstract
Cymbilaimus sanctaemariae (Formicariidae), previously regarded as a poorly known subspecies of C. lineatus, is a distinct species. The two forms overlap broadly in geographical range and are distinct in morphology, plumage, voice, and habitat. We propose the vernacular name Bamboo Antshrike. The species apparently links Cymbilaimus and Thamnophilus. It is a member of the growing list of bamboo-associated birds endemic to southwestern Amazonia.

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