Island Scrub-Jay vs California Scrub-Jay
Aphelocoma insularis versus Aphelocoma californica
Play a quiz with Island Scrub-Jay and California Scrub-Jay
Island Scrub-Jay
California Scrub-Jay
In short
The Island Scrub-Jay is larger and found only on Santa Cruz Island, while the California Scrub-Jay is smaller and widespread along the western U.S. coast. The Island Scrub-Jay has a more robust bill and deeper blue plumage compared to the California Scrub-Jay.
Identification tips
Look for the Island Scrub-Jay's larger size and deeper blue plumage on Santa Cruz Island. The California Scrub-Jay is smaller, paler, and found in mainland coastal areas.
Size
The Island Scrub-Jay is noticeably larger than the California Scrub-Jay.
Plumage
The Island Scrub-Jay has a deeper blue color and a more robust bill, whereas the California Scrub-Jay is paler with a distinct breast-band.
Behaviour
Both species are inquisitive and opportunistic, but the Island Scrub-Jay is more fearless of humans due to its island habitat.
Habitat
The Island Scrub-Jay is restricted to Santa Cruz Island, while the California Scrub-Jay occupies a variety of habitats along the western U.S. coast, including residential areas.
Voice
Vocal differences are not well-documented between these two species.