Six whooping cranes are nearing the end of their migration from Wisconsin's Neceda Wildlife Refuge to a refuge in central Florida. The U-S Fish and Wildlife service is leading the endangered birds by ultralight aircraft. The service hopes to re-establish a traditional migration path the species forgot as its numbers dwindled. Chuck Underwood is a public affairs officer with the U-S Fish and Wildlife Service. He says the crane personalities have significantly slowed the migration: