Waptiti,
This is what is stated on the Delta website under baggage restrictions pertaining to archery equipment:
Archery
Archery equipment is allowed only as checked baggage. All equipment must be in a durable protective container. Items in excess of the baggage allowance will be subject to overweight baggage charges.
For a recurve, I would think you could pack it in a smaller secure case or PVC tube container and put that inside your checked luggage. Also, you could pack it in with your compound bow in the same case if you have the room.
Either way, every time I check my bow with Delta at ticket counter, I tell them that my case contains archery equipment, not guns. Every time, they still require me to go to the TSA office and check it with them. They are not supposed to do this with archery equipment, but they do it anyway because most of these ticket agents don't understand their own rules.
That said, I believe that if you pack your recurve securely in a smaller protective case or tube, you can pack it inside of a regular checked bag. I would still advise claiming it at the counter to avoid a TSA page after you check your bags. I prefer to go to the TSA office personally anyway so I can watch them inspect and RE-LOCK the case.... Hope this helps!