Louis swallowed a live Greenfinch whole when he was about 10 or 11 weeks old
A week or so after that he proudly trotted into the house with a Blackbird wing, just the wing
I'm not sure that he's eaten anything else that was still alive but he's crunched up a Pheasant leg that was the remains of a fox kill and eaten most of a freshly dead rabbit. He's also appeared from the garden with a few feathers round his mouth from time to time. He prefers freshly dead when it comes to eating and restricts himself to rolling if it's something that's been dead long enough to stink
Somehow I don't think he'd be suitable for proper gundog training