You could always do like Guy and make your dog wear face paint.
Not true, I have never put face paint on my dog, but if we are hunting over bare mud flat and birds are skidish, I will smear mud on her, help her blend in. Brown dog blends better on mud, yellow dog blends better in the reeds..
This is funny, never used one myself, never seem to matter. Have had ducks nearly land on my dog several times while on retrieves
Can't tell you how many times I have been standing out in the middle of the decoys and they come flying right in and land on my head, does not mean standing out in the decoys will not flare birds. Can't tell you how many times I watched birds work from a distance and birds flare for no reason, they are just skidish, and one thing does not look right to one bird, one flares and they all flare. When birds are skiddish like this, I hide me and my dog best I can. And humans aren't the only hunters of ducks, you see this hunter in there? This guy pissed me off, hunting during the split..
I see you, get the hell out of here!!