👉 Bluejay is a species of bird in the crow family, commonly known as blue jays. They are also sometimes referred to as bluejacks or jays because of their distinctive yellow tail feathers and black-and-white plumage. Bluejays have a long, slender body with a pointed head and a broad, flat chest. They are found throughout North America, from Alaska to Mexico, but they are most common in the southeastern United States. Bluejays are active during the day and often