I've learned lots from reading the forums. Maybe you guys can help me on this one. I converted a sturdy shed/garage to house 3 big beautiful roosters at night. It has a solid door which is shut after they are in. They have been safe there until last night. Unfortunately I didn't hear anything, just found the evidence the next morning. Two had heads missing and were bloodied and one was bloodied but head still intact. There were feathers everywhere. I'm really scratching my head on this one as the building is really tight. I looked the building over thoroughly. The ONLY place anything could possibly come in is the gap between the top of the wall and the roof eaves, common for ventilation purposes, approximately 5". I had laid some common red bricks all along the top of the wall between the studs which now leaves approximately 3/4" open. Outside that same wall I have stored stacked bricks which reach about 2' high. Three bricks along the top of the wall had been knocked down onto the floor. So..what would get on a brick stack and reach approx 3 1/2 to 4' up to the top of the wall, push a brick to the inside to create a space to go through, jump down, kill 3 LARGE young roosters, take or eat two heads, and get back out the same way it came in?