Tersina viridis, commonly known as the Swallow Tanager or Turquoise Tanager, is a bird species found in parts of Central and South America.

This bird species is known for its striking appearance, featuring bright turquoise-blue plumage on its head, back, and wings, with a white underbelly. They have a relatively small, pointed bill and a short tail.

Swallow Tanagers are native to parts of Central and South America, including Mexico, Belize, Guatemala, Honduras, Nicaragua, Costa Rica, Panama, Colombia, Ecuador, Peru, and Bolivia. They are typically found in forested habitats, particularly in humid areas. They feed on a diet of fruits and insects.

Swallow Tanagers are known for their vocalizations, which include a variety of calls and songs. They are also appreciated by birdwatchers and nature enthusiasts for their striking coloration and unique behaviors, such as their habit of perching on exposed branches and vines.

Swallow Tanagers are generally monogamous and form pairs during the breeding season. They build nests in shrubs or other suitable locations, using plant fibers and other materials. The females typically lay 2-3 eggs, which are incubated for around two weeks.

Swallow Tanagers are not considered to be globally threatened at this time, although they are threatened by habitat loss and fragmentation due to deforestation and other human activities. Conservation efforts are needed to protect their populations and their forest habitat, including the establishment of protected areas and sustainable forest management practices.