Pied wagtails are often seen running across lawns, car parks and other flat areas in pursuit of insects (6). In winter they may also feed on seeds and often gather on rubbish dumps to feed (5). These birds flock together to roost at warm sites such as reed beds and sewage farms. Many birds also feed in flocks in the winter, although some males defend territories (5).  In summer, pied wagtails defend breeding territories (6); the nest is built beneath roof tiles, in walls, amongst ivy, or beneath stones (2) and five or six eggs are produced. These are incubated for 11-16 days and the young will have fledged by 16 days of age (3).