Individual improvements and selective mortality shape lifelong migratory performance

Fabrizio Sergio (), Alessandro Tanferna, Renaud De Stephanis, Lidia López Jiménez, Julio Blas, Giacomo Tavecchia, Damiano Preatoni and Fernando Hiraldo
Additional contact information
Fabrizio Sergio: Estación Biológica de Doñana—CSIC, Avenida Americo Vespucio, 41092 Seville, Spain
Alessandro Tanferna: Estación Biológica de Doñana—CSIC, Avenida Americo Vespucio, 41092 Seville, Spain
Renaud De Stephanis: Estación Biológica de Doñana—CSIC, Avenida Americo Vespucio, 41092 Seville, Spain
Lidia López Jiménez: Estación Biológica de Doñana—CSIC, Avenida Americo Vespucio, 41092 Seville, Spain
Julio Blas: Estación Biológica de Doñana—CSIC, Avenida Americo Vespucio, 41092 Seville, Spain
Giacomo Tavecchia: Population Ecology Group, Institute for Mediterranean Studies (IMEDEA), CSIC-UIB, 07190 Esporles, Spain
Damiano Preatoni: Insubria University, 21100 Varese, Italy
Fernando Hiraldo: Estación Biológica de Doñana—CSIC, Avenida Americo Vespucio, 41092 Seville, Spain

Nature, 2014, vol. 515, issue 7527, 410-413

Abstract: A cross-sectional study of migrating raptors aged from 1 to 27 years old shows that migratory performance gradually improves with age and is driven both by selective mortality and individual improvement, with younger birds leaving progressively earlier as they age and becoming more proficient at coping with adverse environmental conditions, such as unfavourable winds.

Date: 2014
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DOI: 10.1038/nature13696

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