Hi mamabokbok. Our chicks are now 9 weeks. I have raised them in their brooder outside on the back veranda. Since 6 weeks I have only used their brooder light on 2 occasion s when the Temp dipped to 7 degrees (mind you we have 10 chicks). All the other nights I just covered their brooder with blankets making sure to leave one end open for oxygen. They are now in the coop with a very small run till they get used to the idea of going into their coop at night, which hurray the did last night. I will try to take a photo of the run which is covered and made using steel panels I got from bunnings (about 4 for $30). Once the birds are bigger we use the panels to make large free range areas for them which are easily moved. Won't use them for free ranging with the chicks till they stop being so flighty.
I'd love to see photos! I'm thinking they are just about ready, they seem to be a lot healthier being out doors too, I didn't start to take them outside or until about a week ago and I didn't turn off their light at all until about 2 nights ago, I think I might have over/unnecessary babied them a bit, is the first time I've raised chicks so have no idea other than I was told they need a light until 8 weeks old. It's only just starting to warm up here in Canberra though and the weather is bouncing around from sweaty singlet days to jumper days

