North American Owls
There are 21 owl species in North America…below are one of each.
Some lists only have 20 owl species. I have separated Mountain Pygmy Owl and Northern Pygmy Owl, making it 21.
Some lists also contain Brown Hawk Owl (only one recorded live occurrence in North America on St Paul Island, Alaska in 2007) and Oriental Scops-Owl (a few have been found in the Aleutian Islands of Alaska).

Barred Owl

Barn Owl

Boreal Owl

Burrowing Owl

Eastern Screech Owl

Elf Owl

Ferruginous Pygmy Owl

Flammulated Owl

Great Gray Owl

Great Horned Owl

Long Eared Owl

Mottled Owl

Mountain Pygmy Owl

Northern Hawk Owl

Northern Pygmy Owl

Northern Saw-whet owl

Short Eared Owl

Snowy Owl

Spotted Owl

Western Screech Owl

Whiskered Screech Owl