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Article
Javier A. Alonso, Auteur ; Juan C. Alonso, Auteur ; Guenter Nowald, AuteurCapsule German breeding birds wintered mainly in southwest Spain and some in France. Aims To describe migration routes and phenology, and the interannual fidelity to staging and wintering sites. Methods A total of 93 cranes were colour-banded, a[...]
Article
Javier A. Alonso, Auteur ; Juan C. Alonso, AuteurThis publication reports the current status of the Common Crane in Western Europe with regard to the colour-marking carried out from 1985 to 1998. After numerous markings with long alphanumeric rings, the currently used three-colour coding is pr[...]
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 Palacín, Auteur ; Juan Carlos Alonso, Auteur ; Carlos A. Martín, Auteur ; Javier A. Alonso, AuteurA detailed knowledge of the habitat requirements of steppe birds living in farmland habitats is necessary to identify agricultural practices compatible with their conservation. The globally threatened Great Bustard Otis tarda is a partial migran[...]
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
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-[...]
