Both Manx shearwater and storm petrels are also thought to breed on the island . The petrels were similar to, but larger than the short-tailed shearwater. The sooty shearwater feeds on fish and squid. The islands are also an important breeding area for seabirds including the Cape Verde shearwater. The Manx shearwater is with a wingspan and weighs . The Manx shearwater has a remarkable life. Griffiths Island nearby holds a breeding colony of the short-tailed shearwater or Australian muttonbird. The stiff flight, like a large Manx shearwater, is also distinctive. The only other large shearwater in its range is the all-dark sooty shearwater. The endemic Socorro parakeet ("Aratinga brevipes") and Townsend's shearwater ("Puffinus auricularis"), are also endangered. Others, such as the tropical wedge-tailed shearwater, breed seasonally for reasons unknown. The yelkouan shearwater feeds on fish and molluscs. In 1997, O'Toole was posted to 12 Wing in Shearwater, Nova Scotia. Subsequent sightings of the cahow were believed to be confusion with the similar Audubon's Shearwater. The hovercraft were gone by 1982, made redundant by the arrival of "Shearwater 6".