A wren is a small bird belonging to the family Troglodytidae. There are around 80 species of wrens found in the Americas, Eurasia, and Africa. They are generally small, weighing only a few grams, and are known for their round bodies, short wings, and long, thin bills. Wrens are often brown or gray in color, with streaks or bars on their wings and tail. They are known for their loud and complex songs, and are often found in dense vegetation, such as forests, shrublands, and gardens. Wrens are insectivores and primarily feed on insects and spiders, although some species also eat seeds and fruits.