Like brymoore said, they are ADHD.
I've watched one coming in to a call for half an hour. They get distracted by a bird flying by, then sit on their butt and try and remember what they were doing before the distraction.
A decoy with motion, even if it's just a feather hanging from a tree/bush will help them focus.
Very cool animals. I've gotten 7 with calling, every one was called in to less than 50 yards. Everyone I was a bit reluctant to pull the trigger. Consider a shotgun with #2 or BB shot, a 223 sometimes makes a mess of them.