What is a bird farmer called?

There isn't a specific, widely used term for a bird farmer. You could use terms like:

* Avian farmer: This is the most straightforward and accurate term.

* Poultry farmer: This term is typically used for farmers who raise chickens, ducks, turkeys, and other birds for meat and eggs.

* Bird breeder: This term is more specific and usually refers to someone who breeds birds for specific purposes like show or companionship.

It really depends on the specific type of birds the farmer is raising and what they are doing with them.