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EXTERNAL SEX CHARACTERS OF HARRIS HAWKS PARABUTEO-UNICINCTUS-HARRISI IN WINTER
Vol 12, Iss 1-2, Page 1
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NEST SITE SELECTION BY THE BROAD-WINGED HAWK BUTEO-PLATYPTERUS IN NORTH CENTRAL MINNESOTA AND WISCONSIN USA
Vol 12, Iss 1-2, Page 15
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STUDIES ON THE KARYOTYPE OF THE RED-TAILED HAWK BUTEO-JAMAICENSIS
Vol 12, Iss 1-2, Page 28
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RECENT BREEDING SUCCESS OF RICHARDSONS MERLIN FALCO-COLUMBARIUS-RICHARDSONII IN SASKATCHEWAN CANADA
Vol 12, Iss 1-2, Page 35
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A CAR SURVEY OF RAPTORS IN SOUTHEASTERN IDAHO USA 1974-1976
Vol 12, Iss 1-2, Page 40