what the heck?

It was about 20 minutes after sunrise, the golden hour was tinting everything with brass.
Godiva, the mother of the H&G nest, appeared and dove on what looked like, to me and apparently to her, a fish.
She pulled out after grabbing the object with one talon and then instantly releasing it.
She circled, took a second look, and didn’t try again to catch the “fish”.
You can see the “finned” white object about 12 feet to the left of Godiva. I still don’t know what it was.
I just know Godiva wasn’t going to waste any more time on the “non-breakfast” item.walk0810-09-07-16-07-17-48-ebenezer-godiva-fishing