I have a small flock of (13 birds) 4 week old black spanish poults. They are already outgrowing their brooder inside and I am concerned about overcrowding. They have been going out during the day for about a week now, but coming back inside at night. They have a nice outdoor roost enclosed with hardware cloth to which we could easily add a light if needed. The roost is in our fenced back yard which our terrier patrols, so the risk of predators is not too great, but we do have foxes and racoons in our area. Our lows right now are mid 70s, about the same as in the house actually. So is the risk of overcrowding inside greater than the risk of moving them outside early?