Abstract
I studied variation in plumage color and allozymes in Golden-winged Warblers (Vermivora chrysoptera) from Minnesota and in Glue-winged Warblers (V. pinus) from Missouri and from eastern Pennsylvania. Color character scores were less than 2 in Missouri pinus and greater than 26 in Minnesota chrysoptera. The level of genetic divergence (D = 0.001) is comparable to that of conspecific populations of other passerine birds. I found no fixed alleles that could serve as genetic markers for studies of the evolutionary genetics of these warblers.