As the name suggests, house martins have a close association with human dwellings, though there are some pairs that use natural nest sites on coastal and inland cliffs. Migrating here in summer after spending the winter in Africa, they build a nest in the eaves of houses. The nests are made from damp mud, collected from nearby ponds and puddles, and often lined with feathers. They can return year after year to the same nest, repairing it as required. Look out for them swooping to collect flying insects.