Eastern Wood-Pewee

The Eastern Wood-Pewee (Contopus virens) is a small, inconspicuous tyrant flycatcher of eastern North American forests. Though its dull olive-gray plumage makes it easy to overlook among the summer leaves, its clear, mournful, whistling song is one of the defining sounds of the eastern deciduous forest canopy. Highly migratory, this species spends only a short breeding window in North America before returning to wintering grounds in South America.

Identifying the Eastern Wood-Pewee requires examining fine structural details, as it lacks bright colors.

• Plumage: Plain grayish-olive upperparts and pale underparts. The breast and sides feature a dusky wash, creating a "vested" appearance with a pale path running down the center of the abdomen.
• Wings: Possesses two thin but distinct whitish-to-grayish wingbars. A crucial diagnostic mark is the long primary projection (the length of the folded flight feathers relative to the rest of the wing), which gives it a sleek, elongated rear shape.
• Bill: The bill is dark on the upper mandible, while the lower mandible is pale yellow-orange with a dark tip.
• Eye-ring: Most individuals show no eye-ring, or at most an extremely faint, indistinct, split eye-ring.

Similar Species:

• Eastern Phoebe: Lacks distinct wingbars, has an all-dark bill, and constantly bobs its tail down and up when perched (a movement the pewee does not perform).
• Empidonax flycatchers: Generally smaller with shorter wings, more pronounced eye-rings, and different primary projections.
• Western Wood-Pewee: Visually identical in most contexts; best distinguished by voice and geographical range.

During the nesting season, Eastern Wood-Pewees reside in deciduous forests, mixed pine-oak woodlands, forest edges, orchards, and mature suburban parks. They prefer open understories that allow them to fly freely and hunt from dead branches.

They breed across much of eastern North America, from southern Canada down to the Gulf Coast. In late August and September, they migrate south across the Gulf of Mexico or through Central America to spend the winter in the mature forests and forest edges of northern South America.

• Feeding: A classic aerial insectivore, the Eastern Wood-Pewee hunts by sitting conspicuously on a dead branch in the mid-canopy. It sallies out to catch passing insects out of the air—often with an audible snap of its bill—and then returns to the same or a nearby perch.
• Vocalizations: Its song is a diagnostic, slow, whistling sound: a rising and falling peee-a-weee, often followed after a few seconds by a downward-slurred peee-oo. Unlike many songbirds, they continue singing during the heat of midsummer afternoons.
• Nesting: The female constructs a compact cup nest out of grass, plant fibers, and spider webs, which is intricately decorated with lichens. Built horizontally on a tree limb, the nest mimics a natural knot on the branch, making it exceptionally difficult to spot.