Mountain Chickadee vs Boreal Chickadee

In short

The Mountain Chickadee and Boreal Chickadee can be distinguished by their facial markings and habitat preferences. The Mountain Chickadee has a distinctive white eyebrow stripe, while the Boreal Chickadee lacks this feature and has a more uniform brownish cap. Both species inhabit coniferous forests, but the Mountain Chickadee is found in montane regions, whereas the Boreal Chickadee is restricted to boreal forests.

Identification tips

1. Look for the white eyebrow stripe on the Mountain Chickadee. 2. Note the brownish cap of the Boreal Chickadee. 3. Consider the habitat: montane forests for Mountain Chickadee, boreal forests for Boreal Chickadee. 4. Listen for subtle differences in calls, though this may be challenging in the field.

Size

Both species are similar in size, typical of small chickadees.

Plumage

The Mountain Chickadee has a black cap and bib with a white face and a prominent white eyebrow stripe. In contrast, the Boreal Chickadee has a brownish cap and a more muted face pattern without a white eyebrow stripe, and its overall plumage is browner.

Behaviour

Both species are active and often seen flitting through trees, but the Boreal Chickadee may exhibit more irruptive movements due to its harsher environment.

Habitat

Mountain Chickadees are found in montane coniferous forests, often at higher elevations, while Boreal Chickadees are restricted to boreal forests in Canada and northern parts of the United States.

Voice

Both species have similar chickadee-like calls, but specific vocal differences are not well-documented. Mountain Chickadees have a distinctive 'chick-a-dee-dee' call that may differ subtly from the Boreal Chickadee's vocalizations.