Northern Hawk Owl vs Tengmalm's Owl

In short

The Northern Hawk Owl and Tengmalm's Owl can be distinguished by their behavior and habitat preferences. The Northern Hawk Owl is diurnal and often perches atop prominent trees, while Tengmalm's Owl is more nocturnal and secretive. Both species inhabit boreal forests, but the Northern Hawk Owl is more likely to be seen in open areas.

Identification tips

1. Size and Shape: Look for the larger size and longer tail of the Northern Hawk Owl. 2. Behavior: Note the time of day; Northern Hawk Owls are active during the day. 3. Habitat: Observe the surroundings; Northern Hawk Owls prefer open areas, while Tengmalm's Owls are in denser forests. 4. Vocalizations: Listen for the Northern Hawk Owl's rapid whistles versus Tengmalm's Owl's rhythmic hoots.

Size

The Northern Hawk Owl is larger and more hawk-like, with a length of about 36-42 cm, compared to the smaller Tengmalm's Owl, which measures around 22-27 cm.

Plumage

The Northern Hawk Owl has a long tail and pointed wings, with a distinctive facial disk and white spotting on a brown background. Tengmalm's Owl has a more rounded head with a less pronounced facial disk and more uniform brown plumage with white spots.

Behaviour

Northern Hawk Owls are primarily diurnal, often seen hunting during the day, and are known for their falcon-like flight. Tengmalm's Owls are more nocturnal and elusive, preferring to hunt at night.

Habitat

Both species inhabit boreal forests, but the Northern Hawk Owl prefers open coniferous or mixed forests and is often found in burned-over areas. Tengmalm's Owl is more associated with dense, mature forests.

Voice

The Northern Hawk Owl's call is a rapid series of whistles, while Tengmalm's Owl has a more rhythmic, repetitive hoot. These vocalizations are key in distinguishing them, especially at night.