Isotopic (delta H-2(f)) evidence of "loop migration" and use of the Gulf of Maine Flyway by both western and eastern breeding populations of Blackpoll Warblers (vol 86, pg 213, 2015)

Our earlier report of breeding/natal ground assignment, through the use of feather deuterium samples (delta H-2(f)) of Blackpoll Warblers (Setophaga striata) during spring and fall migration at various sites in North America, contained an erroneous breeding origin map derived for a group of birds sampled during spring migration in Florida. Updated analyses revealed a broader breeding range assignment than previously reported, but this change does not affect our original conclusions that Blackpoll Warblers exhibit a "loop migration" pattern as they move between breeding and wintering areas.