Nightjar monitoring. Robert Read
Capturing data in the field with citizen science and species expertise

Browse the range of active BTO projects requiring support. Learn what they contribute to science, and how to participate.

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Arctic Tern Photographer Jeremy Moore


BirdTrack is a free and convenient way of storing your bird records online. BirdTrack lets you keep up to date with what others are seeing, view the latest trends, and contribute your data to BTO science.

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Greenfinch. Photograph by Jill Pakenham

Garden Wildlife Health

Tell us about sick and diseased wildlife found in your garden. Garden BirdWatch participants can also add observations when entering their usual GBW counts.

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Grey Heron. Photograph by John Harding

Heronries Census

Annual survey of all Grey Herons, Little Egrets, Cormorants and scarcer herons nesting in the UK

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Contributions & findings

  • The latest Grey Heron population trends from the Heronries Census are discussed on the Grey Heron page in the BTO's BirdTrends report.
  • The modelled annual population estimates for the UK, now spanning more than 80 years, show a long-term increase.
Nuthatch. Photograph by Edmund Fellowes

Nesting Neighbours

Join our Nesting Neighbours project and help us improve our understanding of Britain's breeding birds.

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Mountain Hare. Andy Howard

Volunteer Mountain Hare Survey

This project aims to gather much-needed information about Mountain Hares in Scotland. Volunteers record hares and (optionally) upland birds via the Mammal Mapper app or with paper field recording sheets.

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Wader Calendar

The Wader Calendar is a quick and easy way for farmers to record waders on their farm and contribute to a national monitoring scheme.

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WeBS counting. Photograph by Teresa Frost

Wetland Bird Survey

The Wetland Bird Survey (WeBS) monitors non-breeding waterbirds in the UK.

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Contributions & findings

  • 3.75 million waterbirds are counted for WeBS each year.
  • WeBS produces annual indices for 110 waterbird species or populations
  • Species totals published annually for over 2,700 sites as open data on the WeBS Report Online