The Scissor-tailed Flycatcher (Tyrannus forficatus), also known as the Texas bird-of-paradise and swallow-tailed flycatcher, is a long-tailed bird of the genus Tyrannus, whose members are collectively referred to as kingbirds. The kingbirds are a group of large insectivorous (insect-eating) birds in the tyrant flycatcher (Tyrannidae) family. The scissor-tailed flycatcher is found in North and Central America.
Its former Latin name was Muscivora forficata. The former genus name, Muscivora, derives from the Latin word for "fly" (musca) and "to devour" (vorare), while the species name forficata derives from the Latin word for "scissors" (forfex). The scissor tail is now considered to be a member of the Tyrannus, or "tyrant-like" genus. This genus earned its name because several of its species are extremely aggressive on their breeding territories, where they will attack larger birds such as crows, hawks and owls.
Adult birds have pale gray heads and upper parts, light underparts, salmon-pink flanks and under tail coverts, and dark gray wings. Axillars and patch on underwing coverts are red. Their extremely long, forked tails, which are black on top and white on the underside, are characteristic and unmistakable.
At maturity, the male may be up to 15 inches in length, while the female's tail is up to 30% shorter. The male performs a spectacular aerial display during courtship with his long tail forks streaming out behind him.
Both parents feed the young. Like other kingbirds, they are very aggressive in defending their nest.
In the summer, scissor-tailed flycatchers feed mainly on insects (grasshoppers, robber-flies, and dragonflies), which they may catch by waiting on a perch and then flying out to catch them in flight (hawking). For additional food in the winter they will also eat some berries.
The scissor-tailed flycatcher is the state bird of Oklahoma, and is displayed in flight with tail feathers spread on the reverse of the Oklahoma Commemorative Quarter.