I live right near a large nature preserve in Alberta, Canada and I often see owls around my home. Great- horned owls seem to be by far the most common ( there are several breeding pairs that nest within walking distance of my house each spring and I love watching the little ones!). I have also seen Great Grey Owls, Northern Saw-whet Owls, Long-eared Owls, Boreal Owls, Barred Owls and Snowy Owls in my area as well. The Barred Owls also nest nearby. I was also fortunate enough to observe some Burrowing Owls out on the grasslands while on a road trip. That was a huge highlight for me - they are so cute and enigmatic.