I thought he had just caught a fish because his throat was doing that flutter-wiggle thing, but he kept it up for a while. Scott suggested the wing position was a way to cool down, and I accepted that because it's easier to believe something positive than to worry about something negative.
I kept an eye on him, and tried to figure out whether the brown on the tip of the right wing was an injury (of course, my first instinct was "that damned alligator!) or natural coloring or even oil. I still don't know. But I've gone back through all of my old Harley pictures, and have never seen coloring like that. See the picture below for another view. I took some other pictures, and it's on both wings at the same spot.He's back out there again this morning, which makes me wonder whether he even left. He's spending a lot of time grooming, which makes me think whatever is going on there must either hurt or itch a lot. Of course, there's a pretty abundant supply of fish, so I don't think he'll starve. Still, it breaks my heart to think he's hurting.