A new subspecies of Grey Butcherbird from the Kimberley, Western Australia

Abstract

The Kimberley isolate of the Grey Butcherbird Cracticus torquatus is morphologically distinguishable from the subspecies argenteus in the Northern Territory and is described as a new subspecies latens. Phylogenetic implications regarding the presence of a partly developed black breast in latens are discussed and it is concluded that C. mentalis is closer to C. torquatus than to C. nigrogularis.