And well worth mentioning again this time of the year - no need to be rude.Yes water is a PITA in the winter, but can be remedied with many options presented on this forum.
This topic is posted over and over and over............................
Some folks use a heavy rubber feed tub, made for livestock, and just put out fresh water a few times daily. You can flip the tub over and give them a good thump, and the ice pops right out.
Remember that chickens can eat snow too, so if their water is frozen for part of the day they will not die of thirst - just make sure they have water first thing in the morning, and later in the day as well.