Can my chicks go outside?

[aart]

We put them out all night last night and they were just fine. The night before they were sleeping right up against the wire rather than in the box I set up, which made me nervous. Last night they discovered the box and piled up in there. My big girls have stopped whining so much about little chicks being next to their run. Hopefully in another couple of weeks we can transition the little ones in with the big ones. I am thinking when they are 8 and 10 weeks old?

No, you want to wait until the youngsters are the same size as the oldsters.
Do a search on 'integration', lots different ways to do it.