Just because a buck is rutting doesn't mean it is capable of causing conception.

This could be a genetic trait, passed on by some older buck, or it could be due to some food, or chemical factor.

I'd take one of those bucks to the state deeer biologist. I'd also contact someone at one of the universites that has a wildlife program. You could also talk to Ray Scott at the Whitetail Institute.

You need to get to the bottom of this, and keep me posted.

T.R.