Eh...I know they will eat terrestrial animals but really they seem to be scavengers and fish eaters mostly. I've seen way more hawks and owls screwing wtih small game than I have eagles.I wonder how long its gonna be before they start showing up with acute lead poisoning.
Watched them massacring ducks when the lakes were freezing over in MN. Ducks would late as long as possible to go south. They’d hole up in the tiny, room sized potholes of open water and the eagles would be there by the dozen picking them off, and then sitting on the ice around it eating them, looking like big bald headed penguins. Looked like something off Nat Geo
Same thing with lambs.They can catch a newborn calf in a skinny minute and have it's eyes out before it's momma can lick it's ass.
Feral cats and loss of habitat are much more of a threat.
True, waterfowl are most fearful of an eagle. Marsh hawks, Ospreys, etc can fly over an impoundment all day and never cause birds to flush. An eagle taking that same flight pattern puts just about all of them in the air and out of harms way. They know the potential threat to them.Same thing with lambs.
As far as waterfowl, I watched two eagles break up a friends swan hunt last Saturday. They perched close and would make an attempt on each group decoying. They never caught one, but totally screwed his hunt.