Cyanocorax affinis
The Black-chested Jay (Cyanocorax affinis) is a striking Neotropical corvid, celebrated for its bold coloration and boisterous social behavior. Measuring approximately 33-38 cm (13-15 inches) in length and weighing around 160-200 grams, this medium-sized jay is instantly recognizable by its vivid black head, throat, and upper breast, contrasting sharply with a pristine white belly and undertail coverts. Its back, wings, and tail are a brilliant, deep purplish-blue, often appearing darker on t...
Found in a variety of semi-open and forested habitats, including dry to moist evergreen and deciduous forests, forest edges, secondary growth, and cultivated areas, typically from sea level up to 1,500 meters (4,900 feet) in elevation.
An opportunistic omnivore, its diet consists primarily of large insects (beetles, grasshoppers), spiders, small vertebrates (lizards, nestling birds, eggs), fruits, berries, and seeds; it will also readily consume human food scraps.
Black-chested Jays are highly social birds, typically observed in noisy, active flocks of 5 to 10 individuals, though larger groups can form. They exhibit diurnal activity, foraging throughout the day and roosting communally in dense vegetation at night. Their foraging strategy is omnivorous and ...
The Black-chested Jay's geographic distribution spans across Central and northern South America, primarily as a resident species with no significant migratory movements. Its core breeding range extends from southwestern Costa Rica and Panama, through northern Colombia, and into northwestern Venez...
Least Concern
- Black-chested Jays are renowned for their highly social nature, often moving in boisterous family groups that can include non-breeding helpers aiding in raising young. - Their intelligence is comparable to that of crows and other jays, demonstrating problem-solving abilities and complex communi...