“The two species do overlap on their high elevation wintering grounds. It’s mind-boggling that until now nobody figured out ...

Researchers unexpectedly found that migratory and resident high-altitude hummingbirds, separated for about three million ...

A team led by scientists at the University of Washington and the University of Aberdeen attached tiny "backpack" trackers to hummingbirds in the ...

Frank Gardner Blue-throated Starfrontlet, Coeligena helianthea. A high-altitude Andes hummingbird found only above 2,000m in Colombia and just across the border in Venezuela, so known as a "near ...