Mangrove Warbler

Yellow Warbler systematics are complex and confusing. Across their range from Alaska and northern Canada through Mexico, Central America, and the West Indies, and including islands out in the eastern Pacific, at least 43 races have been described. These races sort out into some five groups, which often overlap in plumage coloration. Those with chestnut heads, like this one we saw on our 4 July mangrove tour, once were considered to be a separate species—the Mangrove Warbler. Now they are thought to be a race of Yellow Warbler.