Farmers join climate change march, Rooftop sheep, Wader scrapes on farmland

Farmers will join a climate change march in London today, calling for more environmental regulation on agriculture.
On Scotland's Rural College farm near Crianlarich, scientists are looking at the potential impact on sheep health when wader scrapes are created for birds such as lapwing, curlew and snipe to feed in.
Caz Graham witnesses a flock of sheep moving into its new home on the roof of a ten-pin bowling alley in Lancashire.

Presented by Anna Hill and produced by Beatrice Fenton.