Carolina Wren--

Thryothorus ludovicianus

The Carolina Wren is a small, stocky bird that is mostly brown, with a white belly, white "eyebrows," and white specks on her back. Their range (---->) is most of the eastern United States as well as some of Mexico, including the Yucatan Peninsula. This Wren is a small (being about 4.5-5.5 inches long [12-14 cm] and weighing less than 20 grams [0.75 oz]), but vocal bird, though only the male makes a song. The females don't sing, though they do make other noises, in case of danger or something similar.

When a male and female mate, the relationship lasts for life. They will be in the same flock forever, and in mating season they will be the only ones to mate with each other.

They like to live in highly vegetated areas, scavenging for insects and fruit. They will live up to about six years in the wild, but in captivity one reportedly lived to be 23 years, though that has not been proven true.

Sources:
http://www.allaboutbirds.org/guide/Carolina_wren/id

http://www.allaboutbirds.org/guide/carolina_wren/lifehistory

http://en.wikipedia.org/wiki/Carolina_Wren

http://animals.nationalgeographic.com/animals/birds/carolina-wren/