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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Cuckoo. Alan McFadyen

Cuckoo Tracking Project

Help us follow Cuckoos on migration and discover why they are in decline.

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Blue Tit on garden feeder

Garden BirdWatch

Help track the changing fortunes of our garden birds alongside 12,000 other Garden BirdWatchers

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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

Nest Box Challenge

Nest Box Challenge gathers valuable data on breeding birds by asking volunteers to monitor the birds in their garden through the breeding season

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Long-tailed Tit nest. Photograph by Elspeth Rowe

Nest Record Scheme

The Nest Record Scheme gathers vital information on the breeding success of Britain's birds by asking volunteers to find and follow the progress of individual birds' nests.

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Lapwing. Photograph by Howard Stockdale

Northern Ireland Lowland Breeding Wader Survey

Investigating whether Northern Irish lowland grasslands are supporting breeding waders.

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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
Woodcock - Graham Giddens

Woodcock Survey

Help monitor Woodcock in Britain and Ireland by claiming a square.

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