- British Trust for Ornithology
- Promotes bird conservation through volunteer-based surveys; includes information about their projects and publications, events, and membership.
- Edward Grey Institute of Field Ornithology
- Part of the Department of Zoology at the University of Oxford, which conducts research into the behaviour, ecology, evolution and conservation of birds. Includes information about their projects, programmes, facilities, and publications.
- Rare Breeding Birds Panel
- Collects data on the rarer species of birds breeding in the United Kingdom; describes their project, with information about publications, reports, species information, and recording forms.
- Royal Society for the Protection of Birds
- Holds responsibilities to protect and conserve avian species together with their habitat. Also includes names and brief descriptions.
- Wildfowl and Wetlands Trust
- Preservation organization that aims to save habitats and wildlife; and promote education and awareness.
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