Dave - i don't know how familiar you are with the area? but local birder and naturalist Brett Westwood, who lives in Stourbridge, works for the Beeb at that Bristol place in the Natural History Unit. He recently presented a series of 5 15-minute programmes culled from his bird diaries running over the last 40 years. He compares the change in fortunes of both habitat and species during this period.
A fascinating insight into a patch birder with an eye for detail and all still available on BBC Iplayer - miss it at your peril.....
http://www.bbc.co.uk/programmes/b04ynnmn/episodes/player
ATB Laurie:t: