Lewis's Woodpecker

One of the most biologically unique and visually striking woodpeckers in North America, Lewis's Woodpecker (Melanerpes lewis) resembles a crow or tanager more than a typical member of the Picidae family. First collected and documented by Meriwether Lewis during the Lewis and Clark Expedition in 1805, this bird stands out from other woodpeckers because of its dark metallic green-bronze back, soft pinkish-red belly, and light gray collar. Unlike its relatives, it rarely hammers on wood for insects; instead, it spends its summers aerial-foraging for flying insects and its winters harvesting and caching acorns.

Lewis's Woodpecker is a medium-to-large woodpecker with a distinct shape: long wings, a relatively long tail, and a shorter, more delicate bill than most other woodpeckers.

Key Field Marks

• Upperparts: Dark, iridescent greenish-black back, wings, and tail that can appear completely black in poor light.
• Underparts: A soft, pastel pinkish-red abdomen and lower breast, which transitions into a silvery-gray upper breast and collar.
• Face: A dark, crimson-red face patch surrounding the eyes and bill, framed by the gray collar.
• Wings: Uniformly dark above and below, broad, and lacking the white patches or spotting common to most other North American woodpeckers.

Similar Species

• Red-headed Woodpecker (Melanerpes erythrocephalus): Has a solid crimson head, white underparts, and large white wing patches, whereas Lewis's has a dark red face patch, pink belly, and entirely dark wings.
• Acorn Woodpecker (Melanerpes formicivorus): Features a bold black-and-white face pattern and a white rump, lacking the pink belly and gray collar of the Lewis's.
• American Crow (Corvus brachyrhynchos): At a distance or in flight, Lewis's Woodpecker can easily be mistaken for a crow due to its dark, glossy appearance and steady, slow wingbeats. Look for the reddish tones on the face and belly and the smaller size to distinguish it.

This species is predominantly found in open canopy habitats of western North America, ranging from southern British Columbia and Alberta down to New Mexico, Arizona, and California.

Preferred Habitats

• Ponderosa Pine Forests: Open ponderosa pine woodlands with an open understory are their primary nesting areas.
• Burned-out Forests: They frequent recently burned areas (from 2 to several years post-fire) containing abundant standing dead trees (snags) for nesting and insect foraging.
• Oak Savannahs and Cottonwood Groves: Crucial for winter foraging, especially where oak trees provide acorns.

Migration

Lewis's Woodpeckers are opportunistic, medium-distance migrants. Their movements are highly dependent on food availability—particularly acorn and pine seed crops. Populations in northern and higher-altitude breeding locations migrate south or to lower elevations for the winter, often forming loose flocks during migration.

Lewis's Woodpecker deviates sharply from typical woodpecker behavior, opting for flycatcher-like hunting tactics and jay-like food hoarding.

Foraging & Diet

In spring and summer, Lewis's Woodpeckers feed primarily on insects such as beetles, ants, bees, and wasps. Rather than drilling into wood, they sit on exposed perches and sally out to catch insects in mid-air, or sweep low over meadows in search of prey. In fall and winter, their diet shifts to acorns, pine seeds, and wild fruits. They are meticulous food hoarders, storing acorns and other nuts in natural crevices, bark fissures, and power poles, often shelling the nuts and breaking them into smaller pieces before caching.

Vocalization

These are remarkably quiet woodpeckers, rarely calling except during the breeding season. Their primary vocalization is a series of low, weak, chattering notes or a short, harsh, repeating squeak described as a "churr" or "sheek" given near the nest site.

Flight Style

Unlike the undulating, bounding flight pattern of other woodpeckers, Lewis's Woodpecker flies with slow, steady, rhythmic wingbeats. Its flight looks deceptively similar to that of a crow, jay, or nutcracker.

Nesting & Breeding

They nest in tree cavities, typically in large, well-decayed snags or dead branches of living trees (frequently ponderosa pine or cottonwood). Because their bills are softer and less adapted to heavy excavating than other woodpeckers, they often use natural cavities, reuse old nest holes, or colonize cavities excavated by Northern Flickers or Hairy Woodpeckers. They are monogamous and both parents help incubate the 6-8 white eggs.