Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleBreeding performance in the western gull: effect of parental age, timing of breeding and year in relation to food availabilityAuthorsSydeman, W. J.; Ainley, D. G. D. G. Ainley; Penniman, J. F.; Penniman, T. M.; Pyle, P.SubjectsBIRD behaviorPublicationJournal of Animal Ecology, 1991, Vol 60, Issue 1, p135ISSN0021-8790Publication typeArticleDOI10.2307/5450