Their long narrow wings span one metre, ideal for the high-speed oceanic and shearing . Although awkward on land, short-tailed shearwaters are competent swimmers capable of diving ten metres in pursuit of fish. They are also most abundant seabird numbering over 23 million. The chicks are commercially harvested for feathers and oil and have become known as ?muttonbirds?.
Source: http://www.bbc.co.uk/nature/life/Short-tailed_Shearwater
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