Geographic Variation in the "Hoy" Call of the Bobwhite

Abstract
Intraspecific geographic variation in the "hoy" call of female bobwhite (Colinus virginianus) was studied. Twelve morphometric characters of sonograms of this call for 38 individuals, recorded in the field at the 4 extreme corners of the species'' contiguous range in the USA, were examined by univariate and multivariate statistical techniques. In spite of the absence of striking qualitative differences apparent dialects were detected for the 4 populations.