Storm petrels fly tirelessly, using wind to find food

Storm petrels, small seabirds weighing between 20 and 30 grams, exhibit a remarkable level of sustained activity, constantly beating their wings, up to nine times per second. Unlike their larger, gliding relatives, the petrels rarely rest, even when undertaking long foraging expeditions far from their nests during the breeding season.

These journeys can span two days and cover distances of up to a thousand kilometers, involving over a million wing beats. This intense exertion raises questions for scientists: How do these birds manage to find sufficient plankton, their primary food source, without becoming completely exhausted? Furthermore, how do they evade larger predatory birds that might see them as prey?

Researchers are particularly interested in whether storm petrels utilize wind currents to enhance their efficiency during these arduous flights. Understanding these behaviors could provide insights into the survival strategies of small seabirds in challenging marine environments.