Figure 3. NJ Tree of COI Sequences from 260 Species of North American Birds.

Intraspecific divergences were sampled in 130 species; these are marked in blue. Four species showed deep intraspecific divergence: (a) Sturnella magna, (b) Cistothorus palustris, (c) Vireo gilvus, and (d) Tringa solitaria. Higher-order classifications in families (gray) and orders (gold) are highlighted, and are labeled on the left and right of the figure, respectively. Gold numerals indicate the two species that appear as paraphyletic lineages at the family level: (1) Oenanthe oenanthe and (2) Hirundo rustica.