We'd all be tempted, but the correct answer is none of the above. In the interest of getting the most out of your precious time afield with your dog, it's better not to compound one mistake by making another. In fact, maybe yours would be the only mistake. If the dog didn't smell the bird while running downwind, it was an accident. But shooting bumped birds, especially over young and partially trained dogs, is a serious no-no. It encourages deliberate flushing, which most pointers will then do at distances way beyond range. Later, if and when the dog is stop-to-wing trained, it's perfectly acceptable to shoot accidentally flushed birds. In that case, when he halts and watches the bird fly, you will know he's being honest, not flushing on purpose.