I have three 8 1/2 Week Olds. My chicks spent thier first night outdoors (in thier coop of course) on Sunday Night. I was soooooo nervous to leave them, ater having had them tucked away safely in the laundry room for so long. But the coop was well made, the weather was warm through the night (no colder than 7 Degrees Celcius at its coldest) and they just couldnt fit in that darn XPEN brooder anymore. I had also picked up two 4 week olds on Saturday, and these poor babes werent given the special treatment the first chicks got. I put them in a cat carrier in the bottom of the Coop the same night. I was just hoping to warm them all up to eachother sooner rather than later, and figured this may help.
Anyhow, all my chicks have been doing reallllllyyyy well outside. I can tell they love being in the run during the day (which they always had, just a limited space at first. And my coop seems to keep them cozy. And they have learnt to get out on thier own already in the three nights they have been out there. In has proven to be a problem, but all the rumors about chickens being imobile at night are true. I have just been waiting until about 9pm when its almost dark, and walking right up and grabbing them in a pile and tossing them in the coop. If I did it when they were still alert it would take me foever to round them up in such a small space.