Your throwing snowballs and yelling is non-lethal measure to ward off the owl, as are bottle rockets. You're fine there. Lock up your birds and let the owl take care of any rodents hanging around your coop. I would think twice about installing a light- my neighbor's security light is the barred and screech owls favorite hunting spot. The barred go after the rodents and the screech go after the moths the lights attract. Owls can see just fine in the daylight.
mjdtexan- I've had barred owls follow me through the woods when I was working. They do move around, but don't normally actively hunt. They will hunt during the day if they have young and have had difficulty finding prey to feed the young. Normally, owls are out-competed by hawks during daylight hours and mugged by crows, jays and other birds at the same time.
mjdtexan- I've had barred owls follow me through the woods when I was working. They do move around, but don't normally actively hunt. They will hunt during the day if they have young and have had difficulty finding prey to feed the young. Normally, owls are out-competed by hawks during daylight hours and mugged by crows, jays and other birds at the same time.