1. Land-use changes may explain the recent range expansion of the black-shouldered kite (Elanus caeruleus) in southern Europe;Balbontín;Ibis,2008
2. Natural selection and coloration: protection, concealment, advertisement or deception?;Bortolotti,2006
3. The post-fledging dependence period of the black-shouldered kite (Elanus caeruleus);Bustamante;J. Raptor Res.,1993
4. Raptor plumages and external structure;Edelstam,2001
5. Raptors: Birds of Prey of the World;Fergusson-Lees,2001