Actually, I believe that these are osprey siblings taking a bite of the same piece of food. I sat and listened and watched them for half an hour today and the bird on the right was clearly eating something, alone, while the bird on the left was making a lot of noise and fuss. Eventually the bird on the left stopped with the noise making and got involved in eating, though that seemed to lead to more frustration, since he finally flew off to a nearby tree. Shots below are a bit blurry.
The Nature of Maine 