Small Owls |
Northern Saw-whet Owl | Length: 7 – 8 inches Wingspan: 17-22 inches | Native | Common throughout the state, especially in forested areas like Payette National Forest and Boise National Forest | Spring (March to April) |
Western Screech Owl | Length: 8.7 inches Wingspan: 22 inches | Native | Abundant in forests at high elevations, like the Boise Foothills | Late winter to early summer (February to May) |
Northern Pygmy Owl | Length: 5.9–6.7 inches Wingspan: 12 inches | Native | Lives in forested areas like the Sawtooth National Recreation Area and the Clearwater National Forest | Spring to early summer (Late April to June) |
Boreal Owl | Length: 8.7–10.6 inches Wingspan: 20–24 inches | Native | Though quite elusive, sightings occur in remote forests in Boise, Caribou, Clearwater, Panhandle, Payette, Salmon, and Targhee | Spring to summer (March to July) |
Burrowing Owl | Length: 9-11 inches Wingspan: 21-24 inches | Accidental | Mostly seen in the southwestern part of Idaho, like Minidoka National Wildlife Refuge | Late winter to early spring (February to August) |
Flammulated Owl | Length: 6.5-7.5 inches Wingspan: 12-15 inches | Accidental | They are extremely common south of the Salmon River, around ponderosa pine trees | Late spring to early summer (mid-April to July) |
Large Owls |
Barn Owl | Length: 12-16 inches Wingspan: 42-43 inches | Native | Very common in southwest Idaho, sightings become rarer in the north and east | Year-round, with peaks in late winter and spring (March to June) |
Great Horned Owl | Length: 18-25 inches Wingspan: 40-60 inches | Native | Extremely common except for the highest elevations, with sightings in Craters of the Moon National Monument, City of Rocks National Reserve, and Boise River Greenbelt | Late fall to early winter (November to January) |
Barred Owl | Length: 16-24 inches Wingspan: 16-24 inches | Native | Decently common in northern Idaho and around the Frank Church-River of No Return Wilderness | Late winter to spring (February to April) |
Short-eared Owl | Length: 13-17 inches Wingspan: 33-43 inches | Native | Common in southern Idaho, as well as Camas Prairie and Palouse | Varies, often in early spring (March to June, peaking in April) |
Long-eared Owl | Length: 13-16 inches Wingspan: 24-40 inches | Native | Most common in southern Idaho in places like Boise National Forest, but are less common in other parts of the state | From late winter to early spring (around February to April) |
Northern Hawk-owl | Length: 14.2-17.6 inches Wingspan: 18 inches | Accidental | Occasional visitor in northern Idaho | Late winter to early summer (mid-February to May) |
Great Gray Owl | Length: 24-33 inches Wingspan: 4-5 feet | Accidental | They have been seen in thenorthern panhandle, as well as central-western Idaho and the Frank Church-River of No Return Wilderness | Spring to early summer (March to May) |
Snowy Owl | Length: 20-27 inches Wingspan: 49-58 inches | Accidental | Occasional visitors to the northern part of the state | Varies by region and based on prey availability (any time between May and September) |