These owls are the Barn Owl, the Eastern Screech-Owl, the Great Horned Owl, the Snowy Owl, the Norther Hawk Owl, the Barred Owl, the Long-eared Owl, the Short-eared Owl and the Northern Saw-whet Owl. This means it spends time sitting and waiting on an exposed perch. The Northern Hawk Owl can also be seen flying low over the ground as it actively searches for food. Northern Hawk Owl Surnia ulula. Therefore, S. u. ulula numbers are affected negatively when the numbers of voles are lowest.  Whether the bird resides in Eurasia or North America, the strategy is usually similar. When predators (usually other raptors) fly nearby, the male will sometimes chase them away from the nest if he feels it is necessary. When you heard the name of this species, Northern Hawk Owl, for the first time, perhaps you asked yourself... well... is it a hawk or an owl? According to the Idaho Department of Fish and Game, the Northern Hawk Owl has a particular fondness for "brushy, tangled areas around swamps or streams, or the forest edge near muskeg (peat bogs).". But, it will also take larger prey – like a Snow-shoe Hare! Some small mammals travel beneath the snow, so as to move back and forth unseen by potential predators. While the female is busy taking excellent care of the eggs, the male isn't just sitting around. The male however, will guard the nest diligently until the chicks leave. Other natural or human destruction to its boreal forest habitat could spell trouble for this medium-sized owl. Females are slightly bigger with a length of 37.2–44.7 cm (14.6–17.6 in) and a mass of about 340 g (12 oz). Research suggests that yearly reuse of nests is not common, but some northern hawk owls are known to use the same nest sites year after year. It is a lovely combination of dark and light, which makes for some striking plumage patterns. At about two weeks into the chicks' lives the female starts to leave the nest for long spans of time (5 hours or more). However, the male will remain close and will still feed his young on occasion. Length: 14.5 – 17.5 in. In North America the subspecies S. u. caparoch also feeds upon microtine voles, but its population is primarily based on the ten year cycling of the snowshoe hare (Lepus americanus). And, our knowledgeable staff and volunteers are always on hand to answer any questions you might have about Northern Hawk Owls or any other raptor. The genus name Surnia appears to be a word made up by A. M. C. Duméril, the creator of the genus, and ulula is Latin for a screech owl. Both male and female have similar wingspans of about 45 cm (18 in). Its long tail and habit of perching atop solitary trees and hunting by daylight, though, are reminiscent of a hawk. This is the only living species in the genus Surnia of the family Strigidae, the "typical" owls (as opposed to barn owls, Tytonidae). , Duncan, James R. and Patricia A. Duncan. It is also active during the day, like a hawk. The northern hawk-owl will perch and scour the immediate area for prey. Boise, Idaho 83709, Closed Thanksgiving Day, Christmas Eve and Christmas Day, New Year's Day, Easter, and Independence Day, email@example.com After all, the Northern Hawk Owl has a long tail and pointed wings, like a falcon. However, if it comes across an empty nest abandoned by its former owner (usually a hawk or a crow), it might decide to use that instead. Johnsgard PA. (2002) North American Owls: Biology and natural history. The Northern Hawk Owl is able to catch prey using only its hearing! When distressed, its call sounds like a combination of a falcon cacking and tires squealing. The Northern Hawk Owl is a medium sized Owl … , Other animals that are important prey items for the northern hawk-owl include the red squirrel (Sciurus vulgaris) which has been documented to contribute as much as 20% to the hawk-owl's biomass.  Maximum parsimony and maximum likelihood phylogenetic trees created from nucleotide sequencing of the cytochrome b gene demonstrated that Surnia and Glaucidium form a paraphyletic group. Average Weight: Female: 12.3 oz. Though it has some characteristics that resemble hawks and falcons, if you look closely enough you will find the tell-tale signs that this magnificent bird is an owl. Though generally this species is not considered to be migratory, individuals have been known to travel further south, particularly in winter, when food may be more scarce in their regular haunts.
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