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Great Shearwater

The great shearwater is a voyager of the sea, traveling thousands of kilometers each year as it glides just above the waves, wings just shearing the water’s surface.

 

The great shearwater has a wide distribution, found all the way from sub-Antarctic islands up through the Atlantic Ocean to Canada and Greenland.3 Its back and head are mostly brown or black, except for a white band on their tail feathers and also around their neck, giving the bird a capped appearance. Its wings, which span about 1-1.2 meters (3.3-3.9 feet) across, are also covered in dark feathers with a lighter underwing. Expert flyers, these birds spend most of their life on the wing, using air currents over waves to soar vast distances. 

Their travels are part of a yearly migration that begins in April in the Southern Hemisphere where they breed and takes them all the way north past Greenland before returning again to their nesting islands in November. Shearwaters come together in colonies to nest in burrows or crevices along island shores, with each pair raising a single chick together. They are also social while migrating, with flocks traveling and hunting together. They eat primarily fish and squid, which they catch by diving into the water from the air or surface-seizing — landing on the water and “walking” towards food on the surface.

 

 

While great shearwaters are currently considered relatively widespread with a stable worldwide population, they are vulnerable to high levels of bycatch, being accidentally caught in fishing gear.

 

 

Because they rely on healthy, productive oceans across vast migratory routes, international conservation efforts are key to protecting this far-ranging seabird. Oceana campaigns around the world to reduce animals from being incidentally caught in fishing gear as bycatch as well as to rebuild healthy and a bundant oceans for years to come.

 

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