Okay this may sound really weird, but you can all use male human urine if you don't have a buff pooch. I have six sons and a husband - they are encouraged to pee around the barn (yea, it doesn't take much encouraging.) While all of our neighbors have had coyote issues, lost livestock and pets, and I've spotted them in the field across the road, our hens have all been left alone.
~Lisa, with a brood of kids and a flock of hens in MI