Glycerine will only work to a certain temperature. It will keep the surface where it sits from freezing. Molasses will work as well and will let the water turn to mush but not freeze solid. The worst thing to both these methods is that they can cause diarrhea in the birds.
I have used heated dog bowls or bird bath heaters for years. They work well most of the time. If you have a water bowl you can also float little heavier weight balls on the surface if they are outside and the wind will move them around and keep the water from freezing solid. This won't work inside cause the balls won't be moving.
I'm hoping to not deal with this too much this year. Hopefully when/if we get out heater installed we shouldn't have to worry about the water in the building freezing. I'll just have to deal with the outside pens. Hopefully there won't be many.
Yesterday I wired in my new peacock house/pen outlets and hooked them to the existing peacock pens outlets. They allow me to plug in the heated water bowls for them. I was going to work on the plumbing as well but since the arthritis in my hands was so irritated I couldn't get the cap off the plastic pipe cleaner and cement containers. I hope to finish that today as well as hang the netting over the top of the pens. Maybe with a little luck the peafowl will get moved out there in the next day or two. I am so ready. I have a bunch of this year's birds that need the space. Plus then I can see what I need to sell. It will also empty one more pen I really need.
I really wanted to run underground water lines out there and also electric lines but it will have to wait for next year at least. It seems like I work non stop but never get things done.
We have been overrun with possums lately. I was so proud of my newest pyr who is just learning how to be a LGD. (She had been a house dog.) She got a possum all by herself last night that was trying to get in the pheasant pen. I don't think he would have made it but there are plenty of other places he could get in. Heaven knows how many we have shot. You'd think you'd get to the end of them eventually.
My other two dogs have been penned for a while cause one was in heat. My male just can't figure out how to breed and my AI was unsuccessful. He's a great little LGD but it looks like I need to find a new breeding male. I hate to go through the whole acclimation process again. I don't want to start with a puppy either. Grrrr!
I have a few eggs due to hatch today and there aren't any pips yet. I wonder what is going on there.