Figure 3

Neighbor joining distance mid-point rooted minimum evolution tree of B. jamaicensis haplotypes. Branch length indicates degree of genetic differentiation. Bootstrap values providing > 50% support for nodes are indicated. Gray circles indicate haplotypes sampled from breeding sites of B. j. calurus, white triangles indicate haplotypes sampled from breeding sites of B. j. borealis, black squares indicate haplotypes sampled from breeding sites of B. j. harlani, and asterisks indicate haplotypes that were sampled from migrant hawks in California with plumage consistent with B. j. calurus. We applied midpoint rooting, employing the close-neighbor interchange algorithm for finding the tree, beginning with an initial neighbor-joining tree.