1000 sq ft is not really that much yard. My pen is 25x25 which is 625 sq ft. If I doubled that, I'd have 1250. I have 4 ducks and 3 chickens. They free range. If they had to be in their pen 24/7 I'd not want more birds than that. I would not have more than 10 in 2x that space.
Doesn't mean that...