The green jay (Cyanocorax yncas) is a bird species of the New World jays, and is found in both North and South America. Adults are about 27 cm (11 in) long and variable in color across their range; they usually have blue and black heads, green wings and mantle, bluish-green tails, black bills, yellow or brown eye rings, and dark legs. The basic diet consists of arthropods, vertebrates, seeds, and fruit. The nest is usually built in a thorny bush; the female incubates the clutch of three to five eggs. This is a common species of jay with a wide range and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".
Green jays feed on a wide range of insects and other invertebrates and various cereal grains. They take ebony seeds where these occur, and also any oak species' acorns, which they will cache. Meat and human scraps add to the diet when opportunity arises. Green jays have been observed using sticks as tools to extract insects from tree bark.
Green jays usually build a nest in a tree or in a thorny bush or thicket, and the female lays three to five eggs. Only the female incubates, but both parents take care of the young.
As with most of the typical jays, this species has a very extensive voice repertoire. The bird's most common call makes a rassh-rassh-rassh sound, but many other unusual notes also occur. One of the most distinctive calls sounds like an alarm bell.
The green jay group occurs from southern Texas to Honduras.
No particular threats have been identified, and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".