Parus major in the City (image) Max-Planck-Gesellschaft Share Print E-Mail Caption Urban great tits (Parus major) start breeding earlier, their clutches are smaller, and nestlings, when leaving the nest, weigh less than their forst-dwelling cousins. Credit A. Stenhouse / MPI for Ornithology Usage Restrictions Use of images is limited to editorial coverage of scientific topics relating to the activities of the Max Planck Society. Any kind of commercial use (including, in particular, the exploitation of images by means of sale or incorporation in image databases or image catalogues) as well as any promotional use/use for merchandise purposes, disclosure to third parties or granting of related rights to third parties is expressly not permitted. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.