California Scrub-Jay or Steller’s Jay?

General appearance

Steller's jay has a striking appearance with a mix of blue and black plumage. The head, crest, and upper body are a glossy black, while the lower body and wings feature vibrant blue tones. Its distinct, pointed crest and sharp, straight bill further accentuate its appearance. In flight, their broad wings and long tail are clearly visible, adding to their distinctive look. They have white or light blue streaks on their cheek patches.

Male vs female

Steller's jay males and females are similar in coloration and size, making it challenging to distinguish them visually. Both sexes have the same bold black and blue coloration, slightly accentuated by environmental factors and lighting. Any noted differences are subtle, as the plumage color intensity is generally consistent between genders.

Juvenile

Juvenile Steller's jays resemble adults but have duller plumage. Their black crests and head are less distinct, and their overall body coloration is paler, with less vibrant blue. Juveniles often lack the defined facial streaks until they mature. As they grow, their plumage becomes richer and more aligned with adult characteristics.

Primary habitat

The Steller’s jay primarily dwells in the mountains and along the northern coast in pine, spruce, and fir forests, and in pine-oak forests.

Additional range

Besides its main habitats, this bird can locally inhabit riverside oak groves and other deciduous trees, and when not nesting, it ranges into other woodland types, orchards, and well-wooded suburbs.

Natural diet

Steller's jays are omnivorous, with a diet composed of about two-thirds vegetable matter and one-third animal matter. They heavily feed on pine seeds, acorns, and other nuts and seeds, particularly during fall and winter. The jays also consume a variety of berries and wild fruits, and at times, cultivated fruit. During the summer months, their diet includes many insects such as beetles, wasps, and wild bees. Other food sources include spiders, birds' eggs, and occasionally, small rodents or lizards.

Bird feeders

At bird feeders, Steller's jays often consume various seeds and nuts provided, as these mimic their natural diet. They may be seen eating sunflower seeds, peanuts, and other common offerings at feeders. The jays' adaptability allows them to take advantage of these readily available food sources.