The Owl Gull: Swallow-tailed Gulls’ Exclusive Nocturnal Foraging
Submitted by: Sebastian Cruz, American Bird Conservancy Most seabirds rely on daylight for foraging, but the Swallow-tailed Gull (Creagrus furcatus), near-endemic to the Galápagos Islands, has evolved a remarkable exception — it is the only fully nocturnal foraging gull in the world. Using GPS tracking, our study confirms what previous observations suggested: Swallow-tailed Gulls head out to sea exclusively at night, traveling…






