Cyanocorax yncas
The Green Jay, *Cyanocorax yncas*, is a striking corvid known for its vibrant plumage and complex social behavior. Measuring approximately 25-29 cm (10-11.5 in) in length and weighing 66-110 g (2.3-3.9 oz), its body is predominantly bright green, contrasting sharply with a brilliant blue crown and nape, and a distinctive black face and throat. A narrow black band extends from the lores to the sides of the neck, creating a masked appearance. Its most unique field mark is the combination of its...
This species primarily inhabits dense thorn forest, subtropical woodlands, open woodland, and brushy areas, often favoring forest edges and riparian zones. It can be found from sea level up to elevations of 2,600 meters (8,500 feet) in different parts of its extensive range.
The Green Jay is an opportunistic omnivore, primarily consuming a diverse diet of insects (e.g., beetles, grasshoppers) and other arthropods. It also extensively feeds on fruits, seeds, nuts (especially acorns), and occasionally preys on small vertebrates like lizards, frogs, bird eggs, and nestl...
Green Jays are highly social, diurnal birds typically observed in cohesive family groups of up to a dozen individuals that maintain permanent territories. Their foraging strategies are diverse; they glean insects and arthropods from foliage, probe bark for hidden prey, and actively search for fru...
The Green Jay exhibits a notable disjunct distribution across the Neotropics, with two primary populations. The northern population, encompassing the subspecies *Cyanocorax yncas luxuosus*, ranges from extreme southern Texas, USA, southward through eastern Mexico (Tamaulipas, Veracruz, Oaxaca, Ta...
Least Concern
- One of the most vibrantly colored members of the Corvidae family, often considered an anomaly among its generally drabber jay relatives. - Its striking green plumage is not due to pigment but rather to the microscopic structure of its feathers, which reflects light in a specific way (structural...