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sooty shearwater migration map

In the north they are joined by sooty shearwaters from Chile. Fig. 2 of 7 The data helps to identify critical at-sea habitats for marine life and can further ecosys Abstract. Among them, one of the birds with the longest migration routes is the Sooty Shearwater. View Show abstract Shearwater migrations originating from breeding colonies in New Zealand. Brown plumage reminiscent of Flesh-footed Shearwater but narrower-winged. Dark brown seabird with silvery flashes on underwings. After spending the summer breeding in New Zealand, sooty shearwaters migrate to the far north of the Pacific Ocean, where they feed at sea for several months. In calm weather the Sooty Shearwater flies low over the ocean with quick, stiff beats of its narrow wings; in windy conditions, it glides and scales effortlessly over the waves. Wingbeats are quick and snappy but deep. The flights of sooty shearwaters documented in this new study represent the longest animal migration routes ever recorded using electronic tracking technology: around 65,000 kilometers (39,000 miles). Smaller than most gulls. A new study on Sooty Shearwaters in the California Current shows the benefit of seabird tracking data in identifying priority sites for seabird conservation at sea.Satellite technologies, similar to those used by cell phone companies, are enabling scientists to track the sooty shearwater seabird species. Scott Shaffer and his colleagues at the University of California, Santa Cruz, attached very small, light-based geolocators to the legs of sooty shearwaters to track their migration—and what their data revealed is extraordinary: a round trip migration of 40,000 miles. In the process, the arctic tern racks up about 44,000 frequent flier miles (71,000 kilometers)—edging out its archrival, the sooty shearwater, by roughly 4,000 miles (6,440 kilometers). Estimates of population sizes based on recapture numbers were 300 for sooty shearwater, 1300 for white-faced storm petrel and 50,000-60,000 for fairy prion. Birds often get hunted during migration by humans and other predators. In the North Pacific, very similar to Short-tailed Shearwater but slightly larger with longer bill and more gradually sloping forehead. Yet these treks pale in comparison to the yearly migration of Sooty Shearwaters. Birds With The Longest Migration Sooty Shearwater. (a) Interpolated geolocation tracks of 19 sooty shearwaters during breeding (light blue) and subsequent migration pathways (yellow, start of migration and northward transit; orange, wintering grounds and southward transit).The 30° parallels, equator, and international dateline are indicted by dashed lines. Taking advantage of prevailing winds along different parts of the migration route, the birds trace giant figure eights over the Pacific Basin. Sociable at sea, it is often seen in gatherings of hundreds or even thousands, flying in long lines or resting in dense rafts on the water. During 17 cruises, 1983 to 1991, we recorded flight directions and densities of Sooty Shearwaters (Puffinus griseus) migrating across the equatorial Pacific, between the Americas and 170°W.Sooty Shearwaters breed in New Zealand and Chile in winter (seasons given as "boreal"), migrate to the North Pacific during spring, and return south in autumn. The Sooty Shearwater travels about 40,000 miles in migration. [Sooty Shearwaters calling] The Sooty Shearwater is a crow-sized seabird that glides over the oceans on long, slender wings. The Sooty Shearwater was once the record-holder for the longest migration for a bird, but that record was overthrown recently by another featured in this slideshow. 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