Nuttall's Woodpecker

The Nuttall's Woodpecker is a small bird recognized by its black-and-white 'ladder' back pattern. Males have a small red patch on the back of the head. Their flight is undulating, and they are frequently seen hitching up oak tree trunks.

Base color is a deep brownish-black with distinct, crisp white oval spots arranged in a roughly banded pattern across the vane. The white spots are larger on the trailing (inner) vane than the leading (outer) vane.

Pennaceous; tightly interlocked barbs providing a firm, aerodynamic vane. The basal area shows a small amount of plumulaceous (downy) structure for insulation.

The rachis is stiff and dark, transitioning to a lighter, translucent white at the very base (calamus). Barbs are densely packed, angled approximately 30-45 degrees from the rachis.

Smooth and stiff. The surface has a slight waxy gloss, helping with water resistance and durability against wood contact.

Wing. The length and stiff rachis indicate a flight feather (remex), specifically one of the inner primaries or secondaries given the moderate asymmetry.

Bold white spotting on a black ground; small size (8cm); stiff woodpecker metallurgy; restricted California/Baja distribution.

Chaparral, oak woodlands, and riparian corridors. In San Diego, they are commonly found in oak-covered canyons and suburban areas with mature trees.

Near-endemic to California; found from the northern California central valley south into northwestern Baja California. They are non-migratory permanent residents.

Primary cavity nester; they create holes used by other species later. They are insectivorous, helping control wood-boring beetle populations.

Downy Woodpecker (feathers are smaller, usually lack such distinct spotting on primaries), Ladder-backed Woodpecker (extremely similar, but favors desert habitats; feathers are indistinguishable without context, but Nuttall's is the expected species in San Diego woodlands).

This species was named by William Gambel in 1843 in honor of his friend, the botanist and ornithologist Thomas Nuttall. They are almost exclusively associated with oak trees.

Woodpecker feathers have been used historically by indigenous Californian tribes in basketry and ceremonial regalia, though these uses are now strictly regulated.

Look for these feathers near the base of oak trees or near bird feeders in late summer (molting season). The sharp contrast of black and white is a clear indicator of a woodpecker.

Fair to Good. There is some separation of the barbs (splits) on the trailing edge, likely due to mechanical wear or the process of being lost during a molt cycle.

San Diego, CA 8cm long