Carolina Wrens will mate for life.The wrens will work together to build their nest ; one of them will bring materials to the nesting site while the other one will put together the nest. They will use a variety of materials for their nest, things like dead leaves, strips of bark, dried grasses, feathers and etc. We have a few brush piles in our side yard for the birds to pick out some of their building supplies. The brush piles is also a place that the birds can go to for shelter and a place to hide in at times.
The female may lay about four or more eggs and will sit on them for about two weeks. The male will bring her food doing that time. After the chicks break out of their shells, both parents will feed them for about two weeks. By then the chicks should be strong enough to leave the nest.
The parents will still feed the chicks for a while after they leave the nest. We have seen the parents feeding their young ones insects out in our yard. In our backyard we put out dry roasted unsalted peanuts, bird seeds and suet for the birds that are in our woods. The wrens could have several broods in a year.