Green Jay

The Green Jay is one of North America's most colorful songbirds, combining lime-green upperparts and a pale green breast with a striking blue-and-black head pattern and bright yellow outer tail feathers. In the United States it is found only in the dense brushlands of the Lower Rio Grande Valley of south Texas, where it represents the northern edge of a range that extends south through Mexico and Central America into parts of South America.

Highly social, Green Jays travel in small family groups year-round and are notably intelligent, sometimes using twigs as tools to pry insects from bark. Their bold coloring and noisy, gregarious habits make them a favorite target for birders visiting the Rio Grande Valley.

Key Field Marks

• Bright green back, wings, and tail contrasting with a pale grayish-green breast and belly
• Black bib and face mask surrounding a violet-blue crown and nape
• Bright yellow outer tail feathers, conspicuous in flight
• Stout black bill and dark eyes

Similar Species

• No other jay in its U.S. range shares this combination of green body and blue-and-black head; it is unmistakable where it occurs.
• Compare with the Green Jay's Central and South American relatives (formerly considered the same species), which show subtle regional differences in head pattern not relevant to Texas birders.

Green Jays inhabit dense, thorny subtropical woodland, mesquite brushland, and riparian thickets. In the United States this habitat is restricted to the Lower Rio Grande Valley of extreme south Texas, where remaining native brush patches and wildlife refuges support resident populations. The species' broader range extends through eastern Mexico, Central America, and into the Andean foothills of northern South America, with more colorful, differently patterned forms further south.

Green Jays are non-migratory, living year-round in small territories defended by cooperative family groups.

Voice

Highly vocal, with a varied repertoire of harsh rattles, clanging notes, and a repeated cleep-cleep-cleep; often first detected by its noisy chatter before being seen.

Feeding

Forages in the understory and canopy for insects, spiders, and seeds, and readily eats fruit; known to wedge acorns and other food items into bark crevices to hold them while extracting the contents, and occasionally uses small sticks as tools to probe for insects.

Nesting

Builds a bulky cup nest of twigs low in dense shrubs or trees; breeds cooperatively in some populations, with young from previous broods sometimes helping feed later nestlings.