30 degrees and chickens are in the trees!

[Sgvchick]

Hi there!
I have been sifting through many posts of winter care and I'm not finding the answers for our situation, so I apologize if you know this has been posted somewhere- I did try to look.
First winter with our birds. We are in Northern California where right now it's 30 degrees out. We don't get snow, just very cold and frosty. The birds are up roosting- outside, safe from predators, but outside. I always thought we'd put them in the wooden coop when the weather got like this but we haven't and they don't go in on their own. The wooden coop isn't insulated either.
Should we be putting them in for the night? My husband and I aren't agreeing on what to do so any advice would be most appreciated.
Thank you, thank you.

 

[Beekissed]

Well, they could potentially be picked off their tree roosts by owls and even coons and possums. You might try to contain them to the coop for a week until they use your roosts instead. Are your roosts comfortable and at a good height?

We had roosters that roosted in trees in all weathers when I was growing up and they faired just fine.