Eastern Wood-Pewee vs Alder Flycatcher

In short

The Eastern Wood-Pewee and Alder Flycatcher can be challenging to differentiate due to their similar size and general appearance. However, the Eastern Wood-Pewee typically has a longer primary projection and a more uniform grayish-olive coloration, while the Alder Flycatcher is often more compact with a slightly greener tone. Vocalizations are a key differentiator, with the Eastern Wood-Pewee having a distinctive, clear 'pee-a-wee' song.

Identification tips

• Primary projection: Eastern Wood-Pewee has longer primary projection.
• Eye-ring: Alder Flycatcher often shows a more distinct eye-ring.
• Vocalizations: Listen for the Eastern Wood-Pewee's 'pee-a-wee' versus the Alder Flycatcher's 'free-beer' call.
• Habitat preference: Note the habitat; Eastern Wood-Pewee in varied wooded areas, Alder Flycatcher in shrubby, wet environments.

Size

Both species are small flycatchers, but the Eastern Wood-Pewee has a slightly more elongated appearance due to its longer primary projection.

Plumage

The Eastern Wood-Pewee is generally grayish-olive with a less distinct eye-ring, while the Alder Flycatcher may appear slightly greener and often has a more pronounced eye-ring.

Behaviour

Both species are often seen perched on exposed branches, sallying out to catch insects. The Eastern Wood-Pewee tends to occupy higher perches in the canopy.

Habitat

The Eastern Wood-Pewee is found in a variety of wooded habitats, including deciduous and mixed forests. The Alder Flycatcher prefers shrubby, wet areas, often in boreal or northern regions.

Voice

The Eastern Wood-Pewee's song is a clear, whistled 'pee-a-wee,' while the Alder Flycatcher has a buzzy 'free-beer' or 'ree-bee-o' song.