Here in Sweden we have laws banning from the use of lead pellets in shotguns when shooting over smaller(less deep) lakes and marshlands. Not in any other area, except on most shooting ranges.
When hunting in the forest, we need to have led bullets, because when the trees are taken down, the steel bullets/pellets will harm the loggers machines. And I mean, if we shoot at an animal, whichever kind of bullet or pellet, we see if we hit, and if we hit we find the animal. I never leave a hit animal to die, I find it and I kill it. Mostly I use a search-dog. So no, there shouldn't be that many animals running around with lead pellets in them for eagles to eat.