Impact of fishing on sea bird diets

[Laurie Knight <>]

see http://www.sciencedaily.com/releases/2013/05/130513174325.htm

Seabird Bones Reveal Changes in Open-Ocean Food Chain
May 13, 2013 — Remains of endangered Hawaiian petrels -- both ancient  
and modern -- show how drastically today's open seas fish menu has  
changed.
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