Can this happen?
 

I was out duck hunting for wood duck. I threw my decoys out and they wouldn't fly by me. I figured out the decoys were upside down. Could this cause them to turn around?

RE: Can this happen?
 

Most deffinately, thats more than what likely spooked them.Details like that are pretty important and should'nt be overlooked.You've got to remember, their eyesite is 8x stronger than ours,they can pick out detail much faster then we can.