Woodhouse's Scrub-Jay

Woodhouse's Scrub-Jay is a crestless jay of the interior western United States, similar in shape to its coastal relative the California Scrub-Jay but paler and grayer overall, with a less contrasting blue necklace and duller blue coloring on the head and wings.

Formerly lumped with the California Scrub-Jay as the 'Western Scrub-Jay,' this species was recognized as distinct in 2016. It is closely associated with pinyon pine and juniper woodlands across the Great Basin, Colorado Plateau, and southern Rocky Mountains, playing a key ecological role in dispersing pinyon pine seeds.

Key Field Marks

• No crest
• Duller, paler blue on the head, wings, and tail compared to California Scrub-Jay
• Grayish-brown back
• Pale gray underparts with a faint, less distinct blue necklace
• Pale eyebrow stripe

Similar Species

• California Scrub-Jay is brighter blue with a more distinct necklace and inhabits coastal oak woodland rather than interior pinyon-juniper habitat; ranges meet but overlap little.
• Pinyon Jay shares similar habitat but is entirely blue-gray with no white on the underparts and a shorter tail, and travels in large, noisy flocks rather than pairs.

Habitat

Woodhouse's Scrub-Jay favors pinyon-juniper woodland, sagebrush steppe with scattered junipers, and dry montane scrub and oak habitat in the interior West.

Range

Found across the Great Basin, Colorado Plateau, and southern Rocky Mountains, including parts of Nevada, Utah, Colorado, Arizona, New Mexico, and western Texas, extending into the Mexican highlands.

Migration

This species is largely non-migratory, though some populations shift to lower elevations in harsh winters.

Behavior

Woodhouse's Scrub-Jays are territorial and pair-bonded, foraging on the ground and in low vegetation, and are well known for caching pinyon pine seeds in fall, an important factor in pinyon pine forest regeneration.

Voice

Calls include a harsh, scratchy shreep or check note, similar to but slightly different in tone from the California Scrub-Jay's calls.

Feeding

Diet centers on pinyon pine seeds and juniper berries where available, supplemented by acorns, insects, and occasionally small lizards or eggs.

Nesting

Pairs build a twig nest in a low tree or shrub, often a juniper or pinyon pine; the female incubates 2-6 pale green, spotted eggs.