He's done it now 3 times. I did notice a little 'sideways walking' toward me a few days ago, but otherwise I don't even see it coming. I was opening the gate to the run and he pecked me from behind this morning, leaving a welt. Otherwise he seems friendly, allowing us to pick him up and hold him. I fear though if he is going to exhibit any aggressiveness like this as I have 3 small children that go in the chicken yard with me.