How Old Until Taking Chicks Out Of The Brooder

Actually you'll want to wait until they are fully feathered especially considering the chilly night time temps. I'd say from 6-8 weeks would be good.

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We have similar temps here in Okla. I started "hardening them off" at around 3 weeks until they no longer used the heat lamp and around 4 weeks. Meantime, I let them have "free range" time in their grow out cage in the chicken coop starting with a couple of hours until they tolerated all day.( 70's-80's) and moved them to the brooder without the light for about 3-4 nights. Now at 5 1/2 weeks they are outside all day and night. I'm still checking them to make sure they move inside at night. Today has been cool ( 40's) and rainy. I provided dry straw for the run, but they went for the wet straw that I raked up into the corners. They are dry and are learning to "come in out of the rain". So far, everyone is healthy and dry.

 

Temps are ranging 50-70* these days & nights where I'm at. I keep them in the brooder for 2 weeks then they go to a cage in the growout pen with a light for another week or 2 depending on the weather and how fast they are feathering out. I put a piece of cardboard on the cage floor under the light to protect them from drafts from underneath. At 3-4 weeks old I turn them loose inside the growout pen.