Colorimetric and morphometric gradients in colombian populations of dusky antbirds (<Cercomacra tyrannina>), with a description of a new species, Cercomacra parkeri

Colorimetric and morphometric gradients in colombian populations of dusky antbirds (<Cercomacra tyrannina>), with a description of a new species, Cercomacra parkeri Ing lés <Colección Aves> Ornitología Morfología animal Taxonomía animal Ecogeografía Patrones de color Ornithological Monographs 1997 48 21-35