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Masatierra Petrel - BirdForum Opus

Photo © by Michael Hooper
-16.981, -75.508, offshore Central/South Peru, 22 March 2023

Alternative names: De Filippi's Petrel; Defilippe's Petrel

Pterodroma defilippiana


  • Grey crown
  • Grey back
  • Narrow black underwing margins
  • All grey central tail rectrices
  • Black eye patch
  • Thick bill

Similar Species

It can be distinguished from the similar Cook's Petrel by Masatierra's distinctive gray half-collar, much heavier bill and white ear surround accenting a dark eye-patch. Also note stockier appearance and broader wings of Masatierra.


Chile; breeds on Robinson Crusoe (formerly) and Juan Fernandez, San Ambrosio and San Felix Islands, forages in the Humboldt Current.




Open seas and rocky shores.


Usually a pelagic species. They are usually seen sweeping rapidly through the air in high arcs well offshore.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2022. The eBird/Clements checklist of Birds of the World: v2022. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
  1. Alvaro Jaramillo. 2003. Birds of Chile. Princeton Field Guides. ISBN 0-691-11740-3
  2. Wikipedia
  3. eLibrary

Recommended Citation

External Links

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