Pluck and clean the birds, keep the skin on, they WILL cook better, the meat will be tender, moist and stay together that way.
Try a covered dish with a rack to keep the bird 1/2" off the bottom. You can add a little water, but it shouldn't be necessary. Cook @ 300f for about 2 hrs. It should come out of the oven in one piece, but will fall off the bone when you start picking at it. The soft skin will peal right off the meat, so just give it to the dog if you don't want it.
For seasoning, the quickest is use a dry chicken BBQ seasoning, rub it on the outside and sprinkle some on the inside.