BTO British Trust for Ornithology.
British Ornithologists' Union Information on rarities etc.
Wildlife Trusts Brilliant natural history site.
RSPB Royal Society for the Protection of Birds.
Bird On Heaps of good information.
Bird Guides
Wildfowl & Wetlands Trust Lots of info.
SUBBUTEO Natural History Books Wonderful online book catalogue.
BBC birds Well edited site.
Worldwide Birdwatching Sites International sites and links.
Arizona Field Ornithologists
Arizona Bird Clubs
BTO National Nest Box Week How to make a bird house / nest box.
More exotic bird houses.
Kent Ornithological Society
Oxford Ornithological Society
Sheffield Bird Study Group
Knutsford Ornithological Society
Southend RSPB
Watford RSPB
Berkshire Birding
Warrington - Woolston Eyes Conservation Group
Shetland Bird Club
Dee Estuary Guide
Hertfordshire - Rye Meads Ringing Group
Surbiton & District Bird Watching Society
List of many local clubs
Aberdeen University - North Sea Bird Club
Northamptonshire Birds
Clwyd Birds
Welsh Ornithological Society
Cheltenham Bird Club