Jim, you can start the bush hogging around the outside of the field and work toward the middle. As the amount of grass and weeds get smaller, they will start to run across the already cut part. Back 20 years or so ago I carried a 12 gauge pump to shoot rats and snakes. Half grown rabbits or smaller, I would stop the tractor, get off, and catch them. Take em to the house for the kids to raise. Lots didn't believe I could catch the rabbits, but you can stay between them in the cut part, work closer to them throw your hat over in front of them and they would run right to you.
The fellow that rents my fields now for hay has got up turkey and saw where deer have been laying in the back field.
Now I shoot snakes and things with my 9mm, maybe cheating a little, I have a green dot laser and the dot is pretty accurate.