Brood-Manipulation Experiments. II. A Cost of Reproduction in Blue Tits (Parus caeruleus)? Author(s): Richard A. Pettifor Source: Journal of Animal Ecology, Vol. 62, No. 1 (Jan., 1993), pp. 145-159 Published by: British Ecological Society Stable URL: http://www.jstor.org/stable/5489 . Accessed: 27/06/2013 08:02 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. . British Ecological Society is collaborating with JSTOR to digitize, preserve and extend access to Journal of Animal Ecology. http://www.jstor.org This content downloaded from 137.224.18.34 on Thu, 27 Jun 2013 08:02:34 AM All use subject to JSTOR Terms and Conditions