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Uneven Sex-Ratio of Wild Rabbits Taken by Golden Eagles
Carmelo Fernández and Olga Ceballos
Ornis Scandinavica (Scandinavian Journal of Ornithology)
Vol. 21, No. 3 (Sep., 1990), pp. 236-238
Stable URL: http://www.jstor.org/stable/3676783
Page Count: 3
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The sex-ratio of rabbits Oryctolagus cuniculus taken by Golden Eagles Aquila chrysaetos in northern Spain was investigated by sexing pelvic bones from remains found in eyries. The sex-ratio of rabbits in the field was estimated simultaneously by sampling warrens with ferrets and by hunting drives with dogs. The proportion of male rabbits taken by Golden Eagles better approximated that available on the ground during the day than the sex-ratio in the warrens, possibly as a result of greater male above-ground activity.
Ornis Scandinavica (Scandinavian Journal of Ornithology) © 1990 Nordic Society Oikos