Abstract
There is a gap in knowledge of dispersal and migration behavior for many South American waterfowl species. This study presents data describing the movements of three individual Yellow-billed Pintails (Anas georgica) tracked with GPS-satellite telemetry that migrated via a trans-Andean Mountains crossing from Chile to Argentina. The frequency of this dispersal suggests that it is not an unusual behavior for the species, showing a possible facultative migratory trait, using different flight paths for the Andean crossing. Finally, there is evidence suggesting that there may be a migratory pattern behind the movements of southern South American populations after breeding season.
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