Fixed light sockets are something that are common enough in most coops..... they are hopefully, securely mounted and properly wired in.... this item https://www.amazon.com/gp/product/B01MXUT5RH/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
is handy in such a situation because it does not give off any light, and it fits in a socket like a bulb. I do not use these in my coops in Georgia, (I use them in my chick brooder box).... but they would be handy in some situations. Give off a lot more heat than a light bulb if that is called for. They can also be treated as a variable heat source if you wire them to a variable rheostat switch. Do not use it with a plastic socket. (Like is found in some lamps)... you need a ceramic socket.
is handy in such a situation because it does not give off any light, and it fits in a socket like a bulb. I do not use these in my coops in Georgia, (I use them in my chick brooder box).... but they would be handy in some situations. Give off a lot more heat than a light bulb if that is called for. They can also be treated as a variable heat source if you wire them to a variable rheostat switch. Do not use it with a plastic socket. (Like is found in some lamps)... you need a ceramic socket.