Owls:

Northern Saw-whet Owl
Aegolius acadicus

Boreal Owl
Aegolius funereus

Short-eared Owl
Asio flammeus

Long-eared Owl
Asio otus

Burrowing Owl
Athene cunicularia

Great Horned Owl
Bubo virginianus

Northern Pygmy-Owl
Glaucidium gnoma

Elf Owl
Micrathene whitneyi

Eastern Screech-Owl
Otus asio

Western Screech-Owl
Otus kennicottii

Spotted Owl
Strix occidentalis

Barred Owl
Strix varia

Ferruginous Pygmy-Owl
Glaucidium brasilianum

Cactus Ferruginous Pygmy-Owl
Glaucidium brasilianum cactorum

Snowy Owl
Nyctea scandiaca

Flammulated Owl
Otus flammeolus

Great Gray Owl
Strix nebulosa

Northern Spotted Owl
Strix occidentalis caurina

Northern Hawk Owl
Surnia ulula