I'll throw my quick 2 cents in (I'm a General Contractor & very good friends w/ my plumber.) We've had several single digit nights, followed by teen & low 20's days so far here in NC. With freezing & plumbing: 1) Remove all hoses from hose bibs. The new hose bibs are anti-siphon which have to drain or they'll freeze & burst. 2) Insulating pipes is good, but it's still better to leave a faucet dripping HOT water--it freezes first! It doesn't have to be more than a drip (catch it in a milk jug or big pan, use it to water pets/plants with!), and works best if it's the furthest from where the water line comes into the house. Opening cabinet doors helps keep pipes warmer too. Also, keep in mind, it's usually not the first night that pipes freeze--it's when they never warmed up from previous day(s).
With chickens, they're unbelievably hardy critters--mine are in the snow right now trying to figure where the Heck the grass & bugs went! (They really appreciated their scrambled egg treat yesterday though!) Make sure chickens & all creatures have fresh WATER! Another BYCer suggested watering in a small bucket & adding fresh water several times each day--that's working great for me. I have multiple 1-gallon buckets & when one starts freezing, I just switch & bring the frozen bucket inside to thaw. As long as chooks have a draft free place to snuggle--they should be fine--a little perturbed maybe, but fine!
Sorry I can't send you tons of sympathy. Some of our coldest, nastiest weather usually hits in March when YOU'LL have your gardens started. I have a good friend who lives near Dallas--the last time we spoke, it was 27 degrees here & that turkey was wearing short sleeves & soaking up mid-60's sun! Good luck though--welcome to the REAL world!
Yvonne