There's a new 2015 study with diet data for two island groups here:
Newsome SD, Collins PW, Sharpe P. Foraging ecology of a reintroduced population of breeding Bald Eagles on the Channel Islands, California, USA, inferred from prey remains and stable isotope analysis. The Condor [Internet]. Cooper Ornithological Society; 2015 Jul 22;117(3):396–413. Available from: http://dx.doi.org/10.1650/condor-14-213.1
pwinner1
commented
7 years ago
There's a new 2015 study with diet data for two island groups here:
Newsome SD, Collins PW, Sharpe P. Foraging ecology of a reintroduced population of breeding Bald Eagles on the Channel Islands, California, USA, inferred from prey remains and stable isotope analysis. The Condor [Internet]. Cooper Ornithological Society; 2015 Jul 22;117(3):396–413. Available from: http://dx.doi.org/10.1650/condor-14-213.1