When myself and another person noticed the dark coloration around this eagle's neck, we thought it was from getting its head in the mud when foraging for midshipman fish. However, no other eagles looked like this and it looked the same the next day.
I thought maybe it had been shot through the upper part of its beak, but that would not result in the dark feathers.
My guess is that its beak came in contact with a high-voltage line and the electrical charge blew off part of its beak and burned the feathers.
The eagle appeared to be very aggressive and adept at catching the midshipman fish.
Long distance, heat shimmer, and heavy crops prevented me from showing better detail.
OM-1MarkIIOM 150-400mm F4.5 TC lens500mmf/5.61/3000s400 ISO0.0 EV