Trans-andean Passage of Migrating Arctic Terns over Patagonia
نویسندگان
چکیده
Arctic Terns Sterna paradisaea have the longest known migration of any bird species, from the Arctic to the Antarctic, covering up to 80 000 km during a round trip (Egevang et al. 2010). We report here on an apparent trans-Andean passage by southward migrating Arctic Terns on a route that takes them from the rich inshore upwellings of southwestern South America, over the Andes, to the highly productive offshore waters of Argentinian Patagonia. We then explore possible reasons for this behavior.
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