Moving chicks outside

[tweetyburd122]

Around what age would I be able to move my chicks outside?

 

[cjp00a]

I moved mine outside last week. They were 5-6 weeks old and it regularly gets down to the mid-forties at night.

It is supposed to be getting down into the mid 30's this weekend so I'll be putting at heat lamp in the coop just in case as they are currently from 6-7 weeks. From what I read, they would probably be just fine but I would rather be safe than sorry.