How about outriders? I thought that practice was gone, but a friend said that another group had hired a guide with dogs and outriders on the ranch where he was hunting. I'm not sure how they work, but another friend piped in and said that the horses could fine them. Even smell them.
A few ranches I know of do use outriders occasionally. The birds don't seem to be spooked by horses or cattle in their world. They live with 'em.
So the outrider rides thru the pasture, and yes, he does point as he keys his radio and says, "We got birds over here!"