California Scrub-Jay

This feather belongs to the California Scrub-Jay, a bold and intelligent songbird. The bird is medium-sized with lead-grey plumage on the back, a blue head, wings, and tail, and a distinct white throat bordered by a blue 'necklace'. It lacks the crest found on Steller's or Blue Jays.

Rich cerulean or deep blue on the dorsal surface, resulting from structural coloration (refraction of light) rather than pigment. The ventral (under) side is a duller, dark greyish-black. The rachis is dark brown to black.

Pennaceous and tightly interlocked throughout most of the vane; plumulaceous (downy) at the very base (calamus area). The barbs are dense and exhibit structural coloration.

The rachis is thick, stiff, and dark-pigmented. Barbs are set at an acute angle to the rachis, providing the rigidity needed for flight and balance.

The surface is smooth and slightly glossy on the upper side, while the underside appears matte. The feather feels stiff and resilient.

Tail (Rectrix). The near-symmetrical shape suggests it is likely from the inner part of the tail fan.

Deep vibrant blue structural color, uniform dark grey underside, long and rounded shape characteristic of a corvid tail feather, lacking the black barring found in Blue Jays.

Oak woodlands, dry shrublands (chaparral), suburban gardens, and parks across its range.

Resident year-round along the Pacific Coast from southwestern British Columbia through Washington, Oregon, and California into Baja California.

Key seed dispersers; they are primary agents for the planting of oak forests as forgotten cached acorns germinate. They act as both predators of small animals/eggs and prey for raptors.

Steller's Jay (feathers have black horizontal barring), Woodhouse's Scrub-Jay (duller blue/grey tones), Blue Jay (distinct black barring and white tips).

Scrub-Jays are famous for their intelligence; they have been observed caching thousands of acorns and remembering exactly where they hid them. They also exhibit 'Western Scrub-Jay' lineage traits that were split into two species (California and Woodhouse's) in 2016.

While not historically used in the commercial millinery trade to the extent of egrets, jay feathers were occasionally used for fly-tying and small decorative ornaments.

Look for these feathers under oak trees during the late summer molt (July-September). The lack of cross-barring is the fastest way to distinguish them from other blue jays.

Fair to Good. There is some minor separation of the barbs (venting) along the trailing edge, likely due to handling or environmental exposure after molting.