If it were me.. i would leave them in the brooder at night and set up a temporary pen for them outside during the day.. i think the jumping is normal for them too..So the chicks are getting into the ugly dinosaur age I think I might have to move them to the coop.... They are in a 4x4 box but they just seem bird and want to run around.. Is it normal behavior to jump and pounce at each other? It is only August and it is getting down to the upper 40s lower 50s at night! I really don't want to have to hang a heat lamp in the coop!