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Recoveries and resightings of released rehabilitated raptors
Vol 15, Iss 4, Page 97, Date 1981
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The incidence of man-caused and natural mortalities to raptors
Vol 15, Iss 4, Page 108, Date 1981
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A survey of wintering bald eagles in southeastern Montana
Vol 15, Iss 4, Page 113, Date 1981
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Ferruginous hawk using rock in nest defense
Vol 15, Iss 4, Page 120, Date 1981
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Change in raptor hunting behaviour following heavy snowfall
Vol 15, Iss 4, Page 121, Date 1981
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Harrier pursuing mink
Vol 15, Iss 4, Page 122, Date 1981
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Red-shouldered hawks whirling with talons locked in conflict
Vol 15, Iss 4, Page 123, Date 1981