Hi all. Need some advice here. I would like to move my babies outside. My RIR's, SLW's are 3 1/2 weeks and LegH.'s are 4 1/2 weeks. They are in a large brooder that has open side (pic below) so that I can move it along side the main run later for introduction. I live in Wa. State and it gets down on coldest nights now to 40's. The box has 250 watt infrared heat lamp for night time and if its really cold during the day. We put the whole box out on warm days so they can enjoy the sun and fresh air. Sooo, are they ready to go out onto our back porch? I wont take them near my adult pen till they are fully feathered.