He was feeding it to get the picture but Eagles hang around looking for an easy meal. On one of my Alaska trips we went across Cook Inlet to an isolated glacial lake with a nice sockeye run and the eagles would sit in the trees waiting for any released injured fish. Often we would catch a Char and they would be lathargic on the release and an eagle would swoop down and get it.
During deer season last year I posted a picture of an eagle eating deer scraps in my backyard at the edge of my pond. They never pass up an easy meal.