Island Scrub-Jay

The Island Scrub-Jay is found exclusively on Santa Cruz Island, part of the Channel Islands off the coast of Southern California, making it one of the most range-restricted bird species in North America. Compared to mainland scrub-jays, it is notably larger and shows deeper, more saturated blue plumage, an example of the size and color shifts sometimes seen in island bird populations.

Its entire world population is confined to a single island, giving it particular conservation interest despite a currently stable population there.

• Head, wing, and tail feathers are a deep, richly saturated blue, generally more intense than the blue of mainland scrub-jays
• Back feathers are a warm grayish-brown, contrasting with the vivid blue of the head and wings
• Overall feather size runs larger than in mainland Aphelocoma species, consistent with this species' larger body size
• Underparts feathers are pale grayish-white, with a faint darker breast band bordering the whitish throat

Sexes look alike in plumage. Juveniles show duller, less saturated blue feathering that intensifies with maturity after the first molt. One complete molt occurs annually in adults after breeding.

• Restricted entirely to Santa Cruz Island, off the coast of Santa Barbara, California
• Found in oak and pine woodland, chaparral, and other vegetated habitats across the island
• Non-migratory, with the entire population resident on this single island

Island Scrub-Jays cache acorns and other food items for later use, a common scrub-jay behavior, and forage in trees and on the ground for insects, acorns, and small animals. Family groups may show cooperative behaviors similar to related mainland scrub-jays. Calls are harsh, scratchy notes typical of the genus, and nests are built in oak or pine trees across the island's varied habitat.