You should put it back where you found it. This is their breeding season.
It's ok, they already hatched and flew away
Wonder if someone crossed your property to hunt the creek and dropped a decoy?
I doubt it, it's a fight to get back to the creek in that part of the property, more than likely someone upstream was duck hunting and lost/left the decoy and it got swept away in one of the floods, it just settled where I found it and the water receded.
Plastic birds don't taste very good. They are fun to shoot when they're not yours though.
I hear they are like Longhorn steaks, boil them with a horseshoe ans when the horseshoe is tender, throw the steak away and eat the horseshoe.
If you don't have a duck stamp you should not have picked it up.
I wonder if you gotta have a special stamp for that type of waterfowl.
I was hunting pheasant on a preserve and shot a bird that fell into marshy area of high grass. I sent my springer in and she brought back a mallard. I sent her back in and she brought back my bird. There I am hunting with lead shot and a duck in hand. I talked to the owner who figured it had to have gone at least half mile from a local duck pond that had had some shooting on it that morning. I cleaned the duck it had one piece of about #4 steel shot in the breast. That was 20+ years ago. I've always wondered how I would have explained it to a game warden.
That would be a good one to see but, bad one to live through. I believe the proper way to start that conversation is, "Sir, you are never gonna believe this..."