Joseph Duff is one of the leaders of Operation Migration, a nonprofit organization that is using aircraft to restore migrating populations of whooping cranes.
Apr 11th, 2008 | 0 comments | 1,760 Views

Joseph Duff is one of the leaders of Operation Migration, a nonprofit organization that is using aircraft to restore migrating populations of whooping cranes.
In the 1930s, a young Austrian scientist named Konrad Zacharias Lorenz formally documented the process of "imprinting" -- socially bonding to a parent figure.
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