So as a fisherman, I have thrown old bait or fish remnants onto the ice, (or in the lake in the summer), assuming that it would provide a snack for some species of scavenger. Personally, I wouldn't go out of my way to purposely get fish guts or carcasses to put out in the hopes of attracting an eagle, (or other animal), to get a photo, but that's just me.
I can't help think of the old adage, "never feed a stray", whether it's a kitten, dog, woman, man, or eagle! HA
MM