Wren

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Wrens are a family of small brown songbirds called Troglodytidae, with about 96 species in 19 groups. Most wrens live in the Americas, from Alaska to southern Argentina. The Eurasian wren is the main exception, living across Europe, Asia, and northern Africa, and in English it’s often just called “the wren.”

Wrens are among the smallest birds. They range from under 10 cm (about 3.9 in) and 9 g to around 22 cm (8.7 in) and 50 g for the larger species. Their plumage is usually drab—greys, browns, blacks, and whites—with many species showing bars on the tail or wings. They often hold their tails upright and have short wings. Wrens are known for their loud, complex songs, and many species sing in pairs.

Diet and feeding vary by species. Most wrens eat insects, spiders, and other small invertebrates. Some also eat seeds or berries, and a few larger wrens may take small frogs or lizards. A few species have even been observed eating bird eggs.

Wrens live in a wide range of habitats, from dry woodlands to rainforests. Most stay in the same area year-round, while a few temperate species migrate in winter. They build dome-shaped nests and can be monogamous or polygamous, depending on the species.

Culturally, the Eurasian wren has long been called the “king of birds” in Europe. In Ireland, Wren Day is a traditional celebration on Saint Stephen’s Day, featuring a dummy bird paraded around town. Wrens are small, lively birds that play an important role in controlling insects and add bright songs to their environments.