States/Provinces Summary
Phoebastria immutabilis  in Washington, USA
Main ref. (96995). King, W.B., 1974. Pelagic studies of seabirds in the Central and Eastern Pacific Ocean. Pacific Ocean Biological Survey Program. Smithsonian Institution Press, Washington, D.C., U.S.A. Smithsonian contribution to zoology No. 158, 288 p. 
Status: native 
Abundance:  
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