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Article
Carlos Palacín, Auteur ; Juan Carlos Alonso, Auteur ; Javier A. Alonso, Auteur ; Marina Magana, Auteur ; Carlos A. Martín, AuteurFactors responsible for individual variation in partial migration patterns are poorly known, and identifying possible causes of these changes is essential for understanding the flexibility in migratory behavior. Analyzing 190 life histories of g[...]
Article
Marina Magana, Auteur ; Juan Carlos Alonso, Auteur ; Javier A. Alonso, Auteur ; Carlos A. Martín, Auteur ; Beatriz Martín, Auteur ; Carlos Palacín, AuteurWe investigated the spatial arrangement of Great Bustard Otis tarda nests relative to leks in 55 females captured at four lek sites and radio-tracked through 1-6 years in a protected area in central Spain. Although females showed a tendency to n[...]
Article
Carlos A. Martín, Auteur ; Juan C. Alonso, Auteur ; Javier A. Alonso, Auteur ; Carlos Palacín, Auteur ; Marina Magana, Auteur ; Beatriz Martín, Auteur1. We investigated the causes of natal dispersal in four Spanish areas where 35 breeding groups of the polygynous great bustard Otis tarda were monitored intensively. A total of 392 juveniles were radio-tracked between 1991 and 2006 by ground an[...]
Article
Marina Magana, Auteur ; Juan Carlos Alonso, Auteur ; Carlos A. Martín, Auteur ; Luis M. Bautista, Auteur ; Beatriz Martín, AuteurGreat Bustards Otis tarda have expanded their habitat range from historical occupancy of natural steppes to arable farmland, where the species initially benefited from favourable feeding conditions. More recently, the species has suffered severe[...]
Article
Carlos A. Martín, Auteur ; Juan C. Alonso, Auteur ; Javier A. Alonso, Auteur ; Carlos Palacín, Auteur ; Marina Magana, Auteur ; Beatriz Martín, AuteurWe explored sex-biased mortality patterns in a species showing the most extreme sexual dimorphism among birds, the great bustard Otis tarda. Between 1991 and 2005 we studied juvenile and immature Survival in a sample of 361 great bustards radio-[...]
