Figure 2
Map of North American B. jamaicensis sampling locations. We collected all samples from breeding sites during the breeding season from either young in nests or territorial adults. We collected samples from sites 1-4 within the breeding range of B. j. calurus; samples from sites 5-9 within the breeding range of B. j. borealis; samples from site 10 within the breeding range of B. j. harlani; and we collected the pooled samples from site 11 from migrants of unknown breeding origin, all samples from site 11 appeared phenotypically similar to typical or melanistic B. j. calurus. Sampling areas are shown with associated frequencies of mitochondrial control region haplotypes.