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Successful captive breeding of American roughlegged hawks
Vol 10, Iss 1, Page 1, Date 1976
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An evaluation of techniques for capturing raptors in east-central Minnesota
Vol 10, Iss 1, Page 9, Date 1976
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Tether platforms - an improved technique for raptor food habits study
Vol 10, Iss 1, Page 21, Date 1976
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On the recognition of offspring by raptors
Vol 10, Iss 1, Page 30, Date 1976