My chicks (8) were delivered on Sept 15th. So they are almost 4 wks old. I have them all in the same big Rubbermaid type box. The weather has been nice here lately so I put them out in the yard during the day (is that okay???) and then I bring them back in at night. How old do they need to be before I put them outside permanently? My husband is building a coop for them... Is it okay that I let them stay out in the yard all day? I put their food and water out there, but they seem to just eat grass and catch bugs and ignore their food. Are they heat sensitive? I put them in the sun, thinking they would like it and they all started acting like they were going to pass out and die. They were waddling around with their mouths open and then just laying down in the grass with their wings spread out. I moved them to the shade and they seemed to recover. btw... it was only in the low 80s in ATL today. I'm just a little worried that they are more fragile than I think, but at the same time I thought it would be nice to give them a break from the box!?!?! Any thoughts are appreciated! Thanks!