This CCTV footage shows a thief forcing his way into John Brennan's aviary at night. He holds a torch in his mouth.
For fifteen minutes, he grabs at birds with a net, stuffing them into his pockets. At one point passing close to the camera.
Mr Brennan says he's shocked and devastated.
His garden is surrounded by high fences and barbed wire, but he's now considering what more security measures he can take.