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

Identification

• 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.

Distribution

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

Taxonomy

Monotypic.

Habitat

Open seas and rocky shores.

Behaviour

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

References

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

• List of references

Recommended Citation

• BirdForum Opus contributors. (2024) Masatierra Petrel. In: BirdForum, the forum for wild birds and birding. Retrieved 3 May 2024 from https://www.birdforum.net/opus/Masatierra_Petrel

External Links

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