We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAge-Specific Fitness Components and Their Temporal Variation in the Barn OwlAuthorsAltwegg; Schaub; RoulinPublicationThe American Naturalist, 2007, Vol 169, Issue 1, p47ISSN0003-0147Publication typearticleDOI10.2307/4122263