Carolina wrens are bright chestnut or cinnamon-colored. Their throats are pale and undersides a golden tan. They have bright creamy eye bands and white steaks on their wings. Their beaks are dark, sturdy, and have a slight downward curve at the end. Their most striking feature is their long, upward-pointed chestnut tail. Males and females look very similar, although males tend to be a little bit heavier. 

Carolina wrens are small birds, though they are large compared to other wren species. They measure about 5 inches from tip to tail (12.5 centimeters). 

Carolina wrens live in a wide variety of habitats and are common in urban and suburban areas. They prefer damp areas with plenty of shrubs or brush, but also inhabit swamps, farm yards, and gardens. 

6 years on average.

Males sing piercing, flute-like distinctive songs sometimes including the phrase “teakettle-teakettle-teakettle.” While singing, they tip their heads and beaks upward, angling their tails downward. Males can increase their song repertoire by learning new melodies, though this typically has to happen before they are three months old. Different subspecies of Carolina wrens have slightly different songs.  

Carolina wrens are mainly insectivores that eat near or on the ground. They eat spiders, beetles, grasshoppers, crickets, stick bugs, snails, ants and bees. They will also visit backyard bird feeders, including platform and suet feeders. They especially enjoy mealworms, sunflower seeds, dried nuts, dried berries and shelled peanuts. 

Carolina wrens are ctive during the daytime. 

Fledglings tend to stick together near their parents for a few weeks or months after hatching. After that, though, Carolina wrens live alone or in pairs. 

Carolina wrens are monogamous. Breeding pairs stay together for years, until one dies or disappears. Carolina wrens mate between March and October depending on the region and work together to build a nest. Often the nest is in a cavity that can include tree knots, boxes, cans, mailboxes, vine tangles and even old shoes. Females lay three to seven eggs, though usually four. The male sings and feeds the female while she incubates the eggs. After hatching, the parents take turns feeding the nestlings crickets, grasshoppers, beetles and larvae of many insects.

Over the past several decades Carolina wrens have probably benefited from forest fragmentation in some areas and from reforestation in others—both processes create the tangled, shrubby habitat these birds use. They have also benefited from a proliferation of backyard bird feeders.