they radio tagged 33 woodpeckers.acks fall off after four months. >> it's like a small backpack, but more like a fannie pack. we want to keep those wings free on those birds. >> using gps technology, they track the bird's flight pattern. they want to see how missouri's changing landscape affect how the birds fly. researchers are finding these bird don't like to fly-over wide open spaces. >> if an area gets split in half, those birds in that segregated area of the woods may not have a place to go. they may go extinct because they can't find things. >> this is a steppingstone for birds, protecting them and providing them with food. they hope this will be helpful. >> if missouri residents are interested in having birds in their yard and the places where they go hiking, this kind of research is going to provide the information that we need to maintain that into the future. study the red- bellied >> researchers say they chose to study the red bellied woodpecker because it lives in the same area year round next week we're o