Can 9-week olds handle night temps of 40-50F without heat?

[BWchicken]

I have 12 babies and they are all bantams:
wyandottes
brahmas
sebrights
barred rocks
easter eggers

They are 8-9 weeks old and they're used to approximately 70 degrees 24/7. They will now be going to the outside run and coop where days are low 70s and nights are low 50s (occasional upper 40s). I don't want to use heat unnecessarily because I want them to acclimate as the weather gets colder. But I'm wondering if the night temp change will be a shock to their systems since they're used to constant 70s. I don't want to make them sick, but I need to start acclimating them to cooler temps before it gets really cold. Any thoughts?

 

[#1California Chick]

Are they all fully feathered?? What is your roost like?? Will they all be together on one roost? That would be them some additional warmth.

What is your coop like? Are there any drafts?

I would think that they will be OK!

Good Luck!

Cindy

 

[Mahonri]

If they are enclosed and together they will be fine.