Birds of Costa Rica

    PROCELLARIIFORMES: Procellariidae (Petrels, Shearwaters, Diving Petrels)  
Genus: Ardenna (3 species, 7 worldwide)

Ardenna is a genus of shearwater, which are large (around 40 cm.) pelagic diving birds.


Pink-footed Shearwater
Pink-footed Shearwater (Ardenna creatopus) Vulnerable
Monterey, California, United States  
   
Photograph by Alan Schmierer   Image has been placed in the Public Domain.


Sooty Shearwater
Sooty Shearwater (Ardenna grisea) Near Threatened
Cape Pillar, Tasmania, Australia
  Back of wings sooty brown.
   
Photograph by JJ Harrison     Copyright and usage info


Wedge-tailed Shearwater
Wedge-tailed Shearwater (Ardenna pacifica)
Kona, Hawaii, United States
  Light morph.
   
Photograph by Alan Schmierer   Image has been placed in the Public Domain.

All brown except for the white morph which is all white underneath. Note tail with longer feathers in the center.


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