McChooky
Free Ranging
I bought a heat pad and made a cave for my baby chicks 2 years ago and added a black ceramic heat bulb too so they had both but the pad wasn't warm enough so they never used it.Its in my closet nowDo you mean this DIY construction? :
https://www.backyardchickens.com/th...d-in-the-brooder-picture-heavy-update.956958/
It looks kind of tricky imho to make your own cave but I have no experience what so ever.
The ones you can buy in my country are not actually caves but plates. And they come it different sizes.