I had 29 chicks (about 3 days old) in an outdoor brooder. Two of the chicks disappeared the first night. Just *poof* they're gone! No disturbance of any kind. And whatever it was didn't come back the next night. Any ideas? The brooder is on the ground, and is fairly predator resistant, but I know it isn't perfect. I guess I'm just surprised at this method - no disturbance and no repeat. It's like the chicks just walked away.