Jay/dʒeɪ/ Definition 1 of 3Pro Tip 1/3Bird Species There are various species of jays, often distinguished by color. The blue jay is native to North America. Pro Tip 2/3Not Just Blue Despite 'blue jay' being common, jays come in other colors too. The green jay can be found in South Texas. Pro Tip 3/3Loud Calls Jays are known for their loud calls, often heard in forests. Hikers knew jays were nearby due to their piercing calls.