HC Deb 16 January 1985 vol 71 c153W
Mr. Chris Smith

asked the Secretary of State for the Environment what information he has as to the effect of increased acidity of its habitat on the dipper bird.

Mr. Waldegrave

I am advised by the Nature Conservancy Council that recent studies in central Wales and south west Scotland have revealed that the Dipper has declined over the last 20 years on streams and rivers which are relatively high in acidic levels.