Actually, I'm discovering that I prefer processing no more than 5 birds at a time. I have a little skinning station that sets up in under 5 minutes, and because I skin them and don't pluck them, the whole process only takes about 15 minutes. Doing more than 5 at once gets to be a chore; it seems like I can do the 5, and still have time to do other chores, in one evening after work.