I'm interested in raising Buff Orpington or Delaware cockerels in a chicken tractor for meat. I already have a 4x6 a-frame tractor, and don't really want to build another one. Questions: I like a pretty small table bird - 3 to 3.5 lbs is plenty (dressed). How old would each of these breeds need to be to reach that weight? How many would I be able to raise in my 4x6 tractor? Some of the hatcheries (Meyers) have a price break at 11 birds. I'd be pleased if that worked. Thanks for any experience or opinions.