- 11.4 in
- 2.3–3.9 oz
- Geai vert (French)
- Queisque verde, Shara verde, Urraca de montana, Picahayote (Spanish)
- The Central American and South American populations of the Green Jay are separated by 1,500 km (900 mi). The two different groups differ in color, calls, and habitat use, and may be different species. The South American Green Jays are larger and have a crest in front of their eyes.
- A Texas Green Jay flock consists of a breeding pair, the current year's nestlings, and one-year-old, non-breeding jays from the previous year's nest. The one-year-olds defend the territory, which aids the parents, but they are ejected from the family flock soon after the current year's nestlings have fledged.
- In Colombia, the Green Jay retains offspring for several years, and those young help the parents raise more chicks.
- The oldest recorded Green Jay was at least 11 years, 7 months old, and lived in Texas.
In Texas, uses open woodland and brushy mesquite thickets. In rest of range found in humid forests.
Arthropods, vertebrates, seeds, and fruit.
- Egg Description
- Pale greenish white with dark spots near large end.
- Condition at Hatching
- Naked and helpless.
Flimsy open cup of thorny twigs, lined with fine roots, vine stems, moss, and dry grass.
The Green Jay's range has been expanding in Texas, and populations increased between 1966 and 2014, according to the North American Breeding Bird Survey. Partners in Flight estimates a global breeding population of 2 million, with 4% living in the U.S., and 40% in Mexico. The species rates an 11 out of 20 on the Continental Concern Score and is not on the 2014 State of the Birds Watch List.
- Gayou, D. C. 1995. Green Jay (Cyanocorax yncas). In The Birds of North America, No. 187 (A. Poole and F. Gill, eds.). The Academy of Natural Sciences, Philadelphia, and The American Ornithologists' Union, Washington, D.C.
- North American Bird Conservation Initiative, U.S. Committee. 2014. State of the Birds 2014 Report. U.S. Department of Interior, Washington, DC.
- Partners in Flight. 2012. Species assessment database.
- USGS Patuxent Wildlife Research Center. 2015. Longevity records of North American Birds.
- USGS Patuxent Wildlife Research Center. 2014. North American Breeding Bird Survey 1966–2014 Analysis.