Tracking toxins in bird populations requires full-life cycle migratory connectivity information…
Mercury in North American birds has been studied from many years, but no once has looked at it in migrants on the wintering grounds -until now. A new paper from the Vermont Center for Ecostudies found high levels of mercury in songbirds and raptors while wintering on Hispaniola. Because mercury can affect reproduction, among other things, it could have carry-over consequences on breeding populations in the north.
