I went out tonight, and there was a gigantic, monster owl sitting on the T-wire over my chicken coop. I ran out and yelled at him and flapped around like an idiot until he flew to an adjacent tree. Then I threw some snowballs at him until he disappeared into the dark. I did see a thing (vole, shrew, mole... looked like a dog poo with a little tail) run under my steps the other day, so maybe it was just after that... but are my birds at risk?