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[자료] BREEDING SEASON DIET OF SHORT-EARED OWLS IN MASSACHUSETTS

Wilson Bull., 105(3), 1993, pp. 490-496

BREEDING SEASON DIET OF SHORT-EARED OWLS IN MASSACHUSETTS

DENVER W. HOLT'

ABSTRACT. - Short-eared Owl diet at Monomoy National Wildlife Refuge, Chatham, Mas-sachusetts, was studied from 1982-1987. Pellet and carcass data yielded 3654 prey items; 2948 from the breeding season and 706 from the non-breeding season. Thirty-two prey
species from four taxonomic classes were recorded. Approximately 83.0% of the breeding season diet was small mammals. Of these, 93.8% were meadow voles (Micro&s pennsyl-vanicus). Mammals represented 95.0% of the non-breeding season diet, with meadow voles accounting for 97.9%. Prey per pellet averaged 1.2 and 1 .O for the breeding and non-breeding seasons, respectively.

Received 9 May 1992, accepted 24 Dec. 1992.

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