BTO British Trust for Ornithology.
RSPB Royal Society for the Protection of Birds.
British Ornithologists' Union Information on rarities etc.
Bird On Heaps of good information.
Wildlife Trusts Brilliant natural history site.
interBirdNet Rarities and other information.
The Wildlife Web - Scotland Scottish birding sites and rarities. etc.
Bird Guides
Birds in a Cheshire Garden Charming site.
Wildfowl & Wetlands Trust Lots of info.
BBC birds Well edited site.
SUBBUTEO Natural History Books Wonderful online book catalogue.
List of Surveys
Worldwide Birdwatching Sites International sites and links.
Kent Ornithological Society
Oxford Ornithological Society
Sheffield Bird Study Group
Knutsford Ornithological Society
Southend RSPB
Watford RSPB
Cleveland RSPB
Chester RSPB
Berkshire Birding
Central London RSPB
St Albans RSPB
Warrington - Woolston Eyes Conservation Group
List of UK Birdlines
Edinburgh RSPB
Shetland Bird Club
Dee Estuary Guide
Hertfordshire - Rye Meads Ringing Group
Surbiton & District Bird Watching Society
Oxford RSPB
List of many local clubs
Aberdeen University Bird Club
York Ornithological Club
Northamptonshire Birds
Clwyd Birds
Welsh Ornithological Society
Cheltenham Bird Club