Storm petrels are tiny seabirds that spend almost their entire lives at sea, returning to remote island colonies only at night during the breeding season. Their welfare is affected by light pollution, predation, and ocean pollution.
Storm petrel welfare is most acutely threatened by light pollution at breeding colonies and by introduced predators on islands. A single cat introduced to a storm petrel colony can eliminate it within a breeding season through sustained predation of nesting birds and chicks. Light pollution causes the same grounding and mortality as for shearwaters, but the tiny size of storm petrels makes vehicle strikes more frequently fatal. Predator removal from island colonies and light management during fledging season are the highest-welfare interventions for this species.