To The Best of Our Knowledge from Wisconsin Public Radio Break out your binoculars and fill up the bird bath.
Spring is here and the birds are singing.
For years songbird populations seemed to be plummeting, but now some researchers say things are looking up. Also, two of the rarest crane species find refuge in Korea's demilitarized zone. Ornithologist Scott Robinson tells Judith Strasser that some American songbirds are making a comeback, while other species are singing the blues. Robinson is with the Illinois Natural History Survey and the University of Illinois. Bernd Heinrich teaches biology at the University of Vermont.