Presented by Fergus Keeling Arrivals and Departures
As the summer bird visitors head south to the sun, new populations arrive at our shores to spend the winter.
Jessica Holm is at Martin Mere, where the pink-footed geese are expected from Iceland and Greenland; Jeremy Cherfas finds out how birds know when to migrate and how their bodies are made ready for the long journey; and Lionel Kelleway is at Cardiff Bay, where a feeding ground for over-wintering migratory waders is under threat. And young listeners are invited to compete for
Wildwatch Reporter of the Year. Producer MICHAEL BRIGHT
BBC Bristol (Re-broadcast next Sunday. See also 7.30pm)