The days of the old Dennis the menace slingshot is over, the latest state of the art slingshots like the Barnett Cobra Slingshot mean business. (And they are cheap at $17.99 here)
The Barnett Cobra Slingshot has a front stabilizer to eliminate the wobbling wrist and a sight system so you can hit the bird target. "The state of the art design of the Cobra slingshot offers a soft touch contoured grip with stabilizer and detachable wrist brace. Also features a sight system, full shooting guide and magnum power bands."