Divergence of beak morphology, foraging behavior and diet among migratory and year-round resident Fork-tailed Flycatchers (Tyrannus savana) ; Divergencia de la morfología del pico, el comportamiento de forrajeo y la dieta entre migrantes y residentes de la Tijereta Sabanera (Tyrannus savana)

Estudio sobre las diferencias en morfología del pico, comportamiento de forrajeo y dieta en dos subespecies de la Tijereta Sabanera (Tyrannus savana) ; Migration is an energetically costly cyclic movement of animals that requires morphological, behavioral and physiological adaptations. Migration represents a significant event in the annual cycles of many birds due to its energetically demanding nature, especially for long-distance migrants. The Fork-tailed Flyatcher (Tyrannus savana) is partial long-distance migrant with migratory and year-round resident subspecies that coexist during part of... Mehr ...