Ultralight-Aircraft Pilots Teach Refuge-Reared Cranes to Migrate.

Provides information on Operation Migration, a Canada-based non profit organization established to develop methods for teaching captive-reared birds to learn migration routes, specifically whopping cranes, by following specially designed ultralight aircraft. Effort of wildlife specialists and organizations to keep whooping cranes alive; Physical features of a whooping crane that dwell in North America; Task of the international group of U.S. and Canadian citizens, the Whooping Crane Recovery Team.