I've found that the main water tank stays liquid, but the little trough at the bottom that the water feeds into, still freezes up.
Glycerin
Moderators: KG Steve, Chantal, Tigger, peter, Chief Spud
Please DO NOT put glycerine into birdbaths or add to birdseed/food for garden birds as it is harmful, making birds ill and even fatal, and it stops their feathers being waterproof.
Glycerin is a low-level toxin - it raises birds blood sugar so much that they may die or become susceptible to cold temperatures.
Glycerin is a low-level toxin - it raises birds blood sugar so much that they may die or become susceptible to cold temperatures.