IMO, you'd really be better off waiting until spring to hatch any new chicks.
Have you ever integrated new chickens to your flock?
Acclimating them to the cold is one thing, but integrating in extreme temps could really be a problem if your cop and run is not set up for a good integration.
How big is your coop and run?
Dimensions and pics would help immensely here.
How many chickens do you have now?
Oh, and....
Welcome to BYC! @AmazingHens
Here's how to add your general geographical location to your profile.
It's easy to do, and then it's always there!
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