Abstract
ABSTRACT The Bahia Tapaculo (Eleoscytalopus psychopompus) is a rare taxon endemic to a narrow strip of lowland Atlantic Forest in the coast of Bahia, Brazil. Its phenotypic distinction from its sister species, the White-breasted Tapaculo (E. indigoticus), has been considered doubtful because the supposed diagnostic plumage characters were proposed on the basis of only 3 specimens (the type series) and there were no vocal data for the Bahia Tapaculo. Given that it is classified as endangered globally according to IUCN criteria, the definition of the taxonomic status of the Bahia Tapaculo is fundamental for the adoption of effective conservation measures. We conducted analyses of plumage, morphometrics, and vocalizations of both Bahia and White-breasted tapaculos to test for the phenotypic distinction between them. We found that their songs differ significantly in 2 parameters, pace (no overlap) and frequency (slight overlap); and that their calls (both monosyllabic and multisyllabic calls) differ in multip...
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