Sexual maturity begins the next year after hatching. In the case of migration of a wren nesting in relatively early, even when the snow lies. In the northern part of the Russian Federation, it typically appears during the first half of April, for example, in the southern Transbaikalia only at the end of May. On the arrival of birds can be found very quickly, because the male has an area and immediately begin to issue callsigns crackling shouts. County chosen carefully - it should be a territory with many places to hide - for example, dense shrub or a group of fallen trees. Male alone begin to construct a large number of nests that other birds are not true (although such a strategy, and practice other forms of family krapivnikovyh). A wren such nests are 6-12, while in the west of North America, they are usually smaller. The reason that the birds spend a lot of its energy to build such a large number of unused later nests is not known, but in the course of experiments found that females preferred males with a large number of buildings. Each nest set low over the ground or directly on the ground - between the roots and branches of a tree lying in the low schelevidnom hollow, on the banks of the stream, and is a Globular education with thick walls of the overall diameter of 90-120 mm with a small (about 50 mm in diameter) side inlet. as a building material can be used fir prutiki, fern leaves, dry grass, moss, or any such material in the vicinity. An essential attribute of the finished nest used lumps of green moss and dry leaves of last year. As a rule, initially all the nests in varying degrees nedostroeny, and only when the female chooses a suitable nest for laying it dostraivaetsya and lines the inside. As the litter used moss, bits of hair and feathers, but sometimes the litter may not be at all. The remaining slots are used alternately males to spend the night.
A wren is well developed polygyny - that is, one male may have two or more females. The studies conducted in Western Europe, showed that nearly half of all males of polygamous, while in North America is slightly lower. For the season it is one or two clutches of eggs, the first of which in Central Europe is in April - May and the second - in June - July. Typically, the walls consist of 5-7 white eggs with reddish spots in size (16 -18) x (12-13) mm. The intensity of cold varies in different subspecies, and the Commander wren (subspecies T. t. pallescens) spots non-existent. Nasizhivaet a female, the incubation period is 13-16 days. The young hatch naked and helpless. Caregivers, both parents, but in the case of polygyny male role in this process can be significantly reduced. Chicks leave the nest of rather quickly, within 11-12 days. In the Eurasian wren often the victim of an ordinary cuckoo (Cuculus canorus), which throw them into their nest eggs. According to the results of observations conducted in North America in the wild, life expectancy is 4.1 years wren.