Geographic variation and taxonomy of the Arremon taciturnus (Hermann, 1783) species complex (Aves: Passerellidae)
N Buainain, CP de Assis, MA Raposo - Journal of Ornithology, 2017 - Springer
Arremon taciturnus is a polytypic South American species with three currently recognized
subspecies: Arremon taciturnus taciturnus, Arremon taciturnus nigrirostris and Arremon …
subspecies: Arremon taciturnus taciturnus, Arremon taciturnus nigrirostris and Arremon …