The swallow is a very difficult bird to photograph in the air. It is so fast as it soars, weaves and dives snatching its food out of the air. They even drink on the wing and only land on the ground to collect nesting material. They arrive in the UK from their wintering grounds in Africa as early as March. Their pleasant twittering song is often heard as they perch on telephone wires. Swallows generally nest in barns, stables and other buildings frequently returning to the same locality, even to the exact site to breed. The nest is a cup of mud and straw typically on a ledge or rafter.