Operation Migration leader and pilot Joe Duff says, "By far the most difficult part of this study is managing the experiences of the birds. It was difficult enough at Necedah National Wildlife Refuge when the pens were miles away from any human influence and the entire area was closed. But on migration our problems multiply. We need landing sites about every 50 miles. If we have head winds, landing sites are required at 30-mile intervals."
"Our shopping list for a stopover site is short but demanding. If we could custom build them, stopover sites would be:
"Some biologists have questioned why we are not satisfied with areas that are frequented by wild sandhill cranes. But wild cranes have advantages that our birds do not. The birds we raised are neither tame nor wild. Like any creature, they have a natural fear of the unknown, but the rest is a learned response and our ability to teach them is severely limited."
Try This! Journaling Questions