El Niño Drives South American Birds North to Panama

Seabirds native to the cold waters off Peru and Chile are being observed in Panama Bay, far outside their typical range. This unusual migration is a direct consequence of a powerful El Niño event that is warming the eastern Pacific Ocean and severely disrupting marine food supplies. As ocean temperatures rise, fish such as anchovies and sardines are moving to new feeding grounds, compelling seabirds to undertake extensive journeys to find food. This situation highlights the fragility of marine ecosystems when faced with fluctuating ocean temperatures and food scarcity.

Researchers, including those from the Audubon Society of Panama, began noticing these avian visitors in June, coinciding with forecasts for a strong El Niño. While blue-footed boobies are sometimes seen in the Gulf of Panama, their numbers near Panama City are unprecedented. Data indicates a significant increase in sightings compared to previous El Niño events, underscoring that these are not migratory birds but are displaced due to a lack of food. Scientists at the Smithsonian Tropical Research Institute also report extreme climatic conditions, with recent months being the hottest on record for their respective months, expecting this trend to persist.