Woodhouse’s Scrub-Jay or Mexican Jay?

Here's how to tell the difference

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Woodhouse’s Scrub-Jay

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Mexican Jay image 1

Mexican Jay

Woodhouse’s Scrub-Jay

Aphelocoma woodhouseii

Also known as: Woodhouse's Jay

General appearance

The Woodhouse’s scrub-jay stands roughly 11 1/2 inches tall, about the size of a crow. Sporting a slim build and a moderately long tail, this bird presents a blend of dull blue color on its head, wings, and tail with a grayer tone in the center of its back. Its underparts are mostly light gray, with a hint of a blue chest band that sets off its slightly paler throat. Its wings are broad and rounded, while its tail can appear long, rounded, and wedge-shaped.

Male vs female

The description provided does not indicate any significant differences in size, color, or markings between male and female Woodhouse’s scrub-jays. Both genders appear to share the same general physical attributes and coloration.

Juvenile

The description provided does not provide specific details regarding the appearance of juvenile Woodhouse’s scrub-jays. Generally, juveniles may show somewhat subdued coloring compared to adults until they reach maturity.

Size

10.6 - 12.2 in/2.5 - 3.5 oz

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How to tell the Woodhouse’s Scrub-Jay from the Mexican Jay

Visual differences

Woodhouse's Scrub-Jays and Mexican Jays can be distinguished visually by size and coloration. Woodhouse's Scrub-Jay is smaller (11.5 inches) and features dull blue with gray back and light gray underparts. The Mexican Jay is slightly larger (up to 12.5 inches), with a striking blue body and pale grayish-white underparts. The Mexican Jay has a robust bill, which may be hooked in low elevations, unlike Woodhouse's slim build and wedge-shaped tail. Juvenile Mexican Jays are browner and duller compared to adults, which is less distinct in Woodhouse's.

Key differences and behavior

Woodhouse's Scrub-Jays and Mexican Jays exhibit distinct behavioral and ecological differences. Woodhouse's Scrub-Jays, found in arid woodlands and adaptable to suburban settings, are notorious for stealing acorns and occasionally riding on mule deer to eat parasites. Breeding in monogamous pairs, they build nests low in shrubs or trees. Their diet includes insects in summer and acorns in winter. Conversely, Mexican Jays inhabit oak-pine forests, living in cooperative family groups of up to 25 birds. Their communal lifestyle extends to group feeding of young and having multiple nesting females. Mexican Jays predominantly consume acorns and pine seeds, but switch to insects in summer. At feeders, both jays eat seeds and nuts, but Mexican Jays may also eat fruit. In essence, Woodhouse's Scrub-Jays are solitary breeders, while Mexican Jays thrive in social, cooperative groups.

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