I've had Homing Pigeons for decades, already knew with their average body temp. of 107 degrees, give or take a few, their warm feathers with down, plus that fact that wild pigeons do just fine living outdoors in all kinds of weather throughout most of the world, and whenever I enter their loft in the winter it is noticeably warmer, that they produce quite a bit of heat on their own. Their water bowls can freeze. When I lived further north, we had below freezing weather more often, so I did use water heaters to keep water from freezing. Pigeons are quite different than chickens. When fed, they will scarf it all down in 15 min, then get water to drink, and they're good all day for the most part, that's why they're known as athletes of the sky & can fly all day 600 miles non stop! Amazing!!!
Chickens are quite different, they peck & eat All day long. While their body temp is 105 average, give or take, they put off quite a bit More body heat, heating their own space significantly, as they're bodies are much bigger, plus they also have Much Wetter Poop, & ALOT more of it, so they humidity the coop as well, which can be very, very bad if not ventilated properly. If you enter your coop & it's damp or stinky & you see moisture clinging to the window, you need more ventilation! Although most chicken breeds are hardy, depending on your area & type of extreme winter, it is wise to consider their breed to brave the cold, their comb possibly getting frostbite, etc. There has to be a safe balance, ventilated yet sheltered from elements. You also have to be able to adjust to weather fluctuations. Where I live can range from 100 degree dry, or very wet summers, to below zero at times in winter! We could have drought or 2 weeks of heavy rain. I have sealed unit fans to circulate airflow & scoop out the wetter wood chips under their night poop perches Every Morn...that 15 min of poop scooping Really makes a Big Difference! In addition to providing a dry shelter, one essential thing chickens need is Constant access to food & fresh water, All day long. I have heated waterers for my chickens. If our winter temperatures are in the 30s, that is fine. Those times we may dip into 20s & below temps, I had used an oil filled radiant heater (looks like an old time radiator but you plug it in) heating the whole coop to about 35 to 39 degrees but in this area it doesn't happen often. The heater was stored in the house & only placed in the coop Jan & Feb when we got our coldest weather, in the middle of hallway mid coop, not where chickens can get to it, when not in use I covered with a sheet to keep it clean. I know that while this heater hasn't really gotten dusty, coops in general get dusty, birds are taking dustbaths then flapping & preening, so I do plan to upgrade & get the flat panel cozy chicken heaters to place by each night perch very soon, they're on sale now....yes, some shopping is about to happen LOL. I shop more for my flock than anyone!

They're worth it, love them so much!
So far so good! No frostbite damaged combs or toes here.
