The Lava Shearwater or Olson’s Shearwater (Puffinus olsoni), was a species of shearwater that formerly bred on Lanzarote and Fuerteventura in the Canary Islands. The species is known only from fossil remains commonly found in lava fields, and was only described by science in 1990.
The species became become extinct after the arrival of European settlers in the 15th century, probably due to hunting pressures and the arrival of introduced species, such as rats.
The species was intermediate in size between the Manx Shearwater and the Little Shearwater.
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