Waterbirds in the UK.
British Trust for Ornithology.
Wildfowl & Wetlands Trust.
Royal Society for the Protection of Birds.
Joint Nature Conservation Committee (Great Britain)
Thetford : British Trust for Ornithology, The Wildfowl & Wetlands Trust, Royal Society for the Protection of Birds, and Joint Nature Conservation Committee,
2006-
Water birds
Charadriiformes
Bird populations
Wetland bird survey