Last in this innovative public access series about people and the wildlife that interests them, brought closer together by the expertise and technology of the BBC's Natural History Unit.

This week a woman in Middlesex pursues parakeets along the Thames. A Somerset birdwatcher helps reverse the decline in barn owls with his own conservation programme. On the South Downs a man rears butterflies in converted greenhouses and releases them into the wild. And in the Moray Firth dolphin watchers are given a fresh view of their subject, with the help of an underwater camera.

See This Week page 23