Lead pilot Joe Duff makes a fly over in his ultralight aircraft with 10 juvenile Whooping Cranes following as part of Operation Migration on their journey from Wisconsin to their wintering habitats at Chassahowitzka and St. Marks National Wildlife Refuges along Florida's Gulf Coast. This is the 10th group of birds to take part in a landmark project led by the Whooping Crane Eastern Partnership, an international coalition of public and private groups that is reintroducing this highly imperiled species in eastern North America. There are now about 106 whooping cranes in the wild in eastern North America thanks to their efforts. (AP Photo/The Birmingham News, Hal Yeager)

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