After losing 3 ducks and 3 layer hens to our local bald eagle (just North of Seattle), they now have a bad reputation around this house -- a really tough predator to defend on 1/3 acre of run!
I lost a chicken a day to a local hawk when I tried free-range a few years ago. But I still love the raptors. No bad rep at our place. They lived here first. Just make sure your chickens have some cover to run under.
Eagles often drop shellfish onto roads and parking lots to break them open. While I was sleeping in my camper Van I was awoken with a thunderous boom and discovered oyster shell deeply embedded into my roof. Two Eagles who were fighting over a dead rabbit dropped it on my van. It bounced off and the fight continued on the side of the road. At least they were eating their natural food.
Just make sure your chickens have some cover to run under. 
