with Tony Soper
Did you know that the population of gannets has doubled in the last 25 years? How on earth do you count the number of gannets in this country, anyway? Wildtrack discovers how, when they do their own survey of the gannetry on the island of Grassholm.
Tony sets off along the longest footpath in Britain and finds a fantastic variety of wildlife on the way-everything from peregrines to red deer.
And botanist Su Ingle reports on the tree that may take the place of the elm in the British countryside.
Producer MIKE BEYNON. BBC Bristol