Prey Availability and Prey Taken by Long-Eared Owls in Iowa
- 1 January 1978
- journal article
- research article
- Published by JSTOR in The American Midland Naturalist
- Vol. 99 (1) , 162-171
- https://doi.org/10.2307/2424940
Abstract
Prey taken by long-eared owls (Asio otus) and prey population levels were monitored in southern Iowa [USA]. Microtines and Peromyscus spp. made up the bulk of the owls'' diet. Microtines were taken by owls in a highly disproportionate number compared to their abundance in the prey population. Peromyscus were taken much less often than they occurred in the prey population. Microtine abundance in the pellets decreased through the season; Peromyscus increased. Predation pressure by long-eared owls appeared to be relatively insignificant.This publication has 4 references indexed in Scilit:
- The Winter Foods of Some Indiana OwlsThe American Midland Naturalist, 1947
- Competition for Food by Birds of PreyJournal of Animal Ecology, 1946
- Die ernahrungsokologischen Beziehungen Zwischen Asio otus otus L. und ihren Beutetieren, insbesondre den Microtus‐ArtenEcological Monographs, 1933
- The Pellet Analysis Method of Raptor Food Habits StudyOrnithological Applications, 1930