How old are they now?They aren't even using the brooder correctly anymore
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Time to remove it I think. And put up the roost bars. Should I leave that lid in front of the nest boxes or let them sort themselves out?
You can tip the brooder plate on its side so they can snuggle up next to it if they need warming up.
Not sure of your night time temps, but as long as no drafts they should be ok, I would put in roosts, mine enjoyed hopping up on anything and everything by they time they were 2 weeks old - little brats loved my office chair - thankfully only one poop happened.