The best video I have ever seen on how to do this process.
Buy some chickens, do it and practice!
Cooking time is about 2 hours at 350°F is a roasting pan.
Place a small bit of stock in the bottom of a pan with a couple of chopped carrots, onion and celery for flavor.
Use your favorite stuffing. When practicing, I make and donate the cooked chickens to Ronald McDonald House so we don’t get sick and tired of eating skills practice.
As Jacques says, you can do this with all birds.