brooder

noun2

1. •
   A heated box used for chicks or premature babies.

   • [E]verybody worked hard to get the chicks safely into the brooders. — 1970
2. •
   A person who broods.

   • Ah! our poor simple fathers should rise up Out of their graves, and come to get advice And comfort from the brooders that are now. — 1828