British Trust for Ornithology, UK
Organization(s):
- British Trust for Ornithology, UK
- Royal Society for the Protection of Birds, UK
- Wildfowl and Wetlands Trust, UK
- United Kingdom, Joint Nature Conservation Committee (JNCC)
Author(s):
- Stroud, D. A. (David A.)
- Glue, David
Organization(s):
- United Kingdom, Nature Conservancy Council
- British Trust for Ornithology, UK