Whooping Cranes Summer Plans Examined

Wildlife biologists are happy that five famous whooping cranes are back in Wisconsin after spending the winter in Florida.But the scientists say their experiment with the cranes is far from over.The birds are part of an effort to create the first migrating flock of whoopers in the eastern U.S. in about a century.Chuck Quirmbach has more on what the research team will be doing next at the Necedah National Wildlife Refuge.