Flocking of foraging Yellow-billed Choughs Pyrrhocorax graculus reflects the availability of grasshoppers and the extent of human influence in high elevation ecosystems
Natal dispersal and survival of juvenile Rock Ptarmigan Lagopus muta in the French Alps and Pyrenees (April-June), a result that suggests a delayed effect of such dispersal
Diet and breeding performance of the Golden Eagle Aquila chrysaetos at the eastern and western extremities of the Pyrenees: an example of intra-population variability
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