12. Bildstein, K . L., and M. W. Collopy. In Press. Geographic variation in the hunting behaviour of Northern Harriers in North America: ecological and conservation implications for the genus Circus. Pp. xx-xx in Ecology and conservation of harriers. Hawk and Owl Trust, London, England. | Hawk Mountain Sanctuary: Learn Visit Join

12. Bildstein, K . L., and M. W. Collopy. In Press. Geographic variation in the hunting behaviour of Northern Harriers in North America: ecological and conservation implications for the genus Circus. Pp. xx-xx in Ecology and conservation of harriers. Hawk and Owl Trust, London, England.

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