I have one of those (though mine is an off-brand one). I’ve been very happy with it. Well worth the money, IMO.
When you consider the number of chicks it can cover, keep in mind the claimed number refers to day-olds. They grow very fast. That said, as they grow they also need less heat. Most of them will be roosting on top within less than a week. (It’s warm up there, too.) you can make your own if you like.
- Obtain a heating pad with an option to disable the “auto off” feature, or cut out the control and wire the cord back together. You will never use anything but the highest setting anyway, which is what you’ll be left with if you cut out the regulator.
- Build an armature to support the heating pad in an arch shape. I used a couple layers of hardware cloth.
- Cover the armature and heating pad. Layer the heating pad on top of the armature and wrap it with something that can be wiped clean. I put it inside a plasticized feed bag, then used duct tape to fit the bag to the armature and to secure the cord in place.
- You are done! Please remember to disable the auto-off if necessary!
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Here are adorable little turkey poults enjoying the mama hen heating pad, aka brooding cave.