Penteriani, V., Ferrer, M. 2004. Unpaired female birds use sex to attract already paired males: «La donna è mobile qual piuma al vento». Ethology Ecology and Evolution 16: 91 – 95.
Key words: monogamus birds, spanish imperial eagle, aquila adalberti, doñana national park, mating system dynamics, extra-pair copulations
Year: 2004