Many bird species are in decline across North America, with decades of falling numbers. In western Minnesota, researchers are examining the link between climate change, birds and the insects they eat.
The late April cold forced thousands of migrating dark-eyed juncos, rusty blackbirds and other creatures to temporarily pit-stop in Duluth, creating a bonanza for backyard bird-watching.
Minnesota s forests are one of the few significant breeding grounds left for the golden-winged warbler. Now the question is whether conservationists can manage trees and shrubs in a way that will allow the birds population to grow.