Quails

Commercial quail farming is something we'll get to in a bit, but first, what exactly is quail farming? A quail farm is a commercial operation that raises quails (or other poultry birds) for the purpose of harvesting eggs and meat for human consumption.
From what we've seen, raising quail is a simple, profitable, and fun business.

As one of the tiniest types of poultry birds, quails require very little space and attention on a farm. Japanese researchers were the first to succeed in domesticating wild quails and make their methods public.