- Aviscience.com - source of scientific information for birders and ornithologists
- Bird Study - the Journal of the British Trust for Ornithology
- Birdforum - birding community dedicated to wild birds
- Birdguides.com - general web site about birdwatching. With books and online store
- Birdseekers - UK based organiser of birdwatching and nature tours worldwide
- British Birds - monthly journal publishing articles on a wide variety of topics, including behaviour, conservation, identification, status and taxonomy
- Cambridgeshire Bird Club - The Cambridgeshire Bird Club collects and publishes information on the birds of Cambridgeshire, UK
- Dean Birders - project aimed to help setting up feeder stations and nesting boxes in the gardens of elderly and disabled persons
- Euring - The European Union for Bird Ringing
- Glamorgan Birds - joint web site of the Glamorgan Bird Club and Gower Ornithological Society
- Reef and Rainforest Tours - organiser of wildlife holidays and small group tours to seventeen wildlife destinations worldwide
- Remembird - birdsong and notes recorder plus audio field-guide
- Rushcliffe Barn Owls - The Rushcliffe Barn Owl Project, aiming to conserve and increase the population of Barn Owls in Rushcliffe
- Rutland Ospreys - about the Ospreys originally re-introduced to Rutland from the Scottish population
- Schiffornis Bird Tours - Tour organiser mainly focussing on the Neotropics, Nearctic, Afrotropics, Australian, Oriental and Western Palearctic regions
- The Barn Owl Trust - Established as a registered charity in 1988, The Barn Owl Trust works to conserve the Barn Owl in Britain through practical conservation, education and research
- The British Ornithologists Union (BOU) - The British Ornithologists' Union, founded in 1858, aims to encourage the study of birds in Britain, Europe and throughout the world, in order to understand their biology and to aid their conservation
- The British Trust for Ornithology (BTO) - The British Trust for Ornithology, founded in 1933, is an independent scientific research trust, investigating the populations, movements and ecology of wild birds in the British Isles
- The Dee Estuary - about the Dee Estuary on the North Wales / North-West England border
- Wheatear.biz - supplier of ringing equipment, feeders and nest boxes
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