There are no (intentionally) flooded crops around where I am at. And none last year at end of season. Late last year the hens I killed were cram full of smartweed and bidens and blood worms. The hens crops and necks felt like stress balls when you squeezed them. The drakes were fairly empty. I chalk that up to the drakes chasing and harassing hens and one another protecting their hens. I killed a drake woody late last year that I pulled 10 quarter sized acorns out of him. When I picked him up I honestly though that that duck had tumors. He rattled in my hand.