View information about all our completed projects and surveys that are no longer collecting data. We are incredibly grateful to everyone who supported these schemes. Thank you.
Recent completed surveys
- Tawny Owl Calling Survey
- Tawny Owl Point Survey
- English Winter Bird Survey 2018/19
- GardenWatch
- Norfolk Bat Survey
Large-scale completed surveys
- Bird Atlas 2007-2011
- 1988-1991 Breeding Atlas
- 1968-1972 Breeding Atlas
- Winter Atlas 1981/82-1983/84
- Common Birds Census 1962-2000
- Waterways Bird Survey 1974-2007
- Ornithological Sites Register 1973-1977
Completed surveys 2016-2020
- English Farm Woodland Birds 2019
- Non-Estuarine Waterbird Survey 3 (NEWS III) 2015/16
- Urban Gull Case Study 2018 & 2019
- Northern Ireland Lowland Breeding Waders 2018 & 2019
- Heronries Survey 2018
- House Martin Nest Study 2016 & 2017
- Breeding Waders of English Upland Farmland 2016
Completed surveys 2011-2015
- House Martin Count Survey 2015
- Peregrine Survey 2014
- Early Bird Survey 2014
- BTO House Martin Pilot 2014
- Winter Thrushes Survey 2012/13 & 2013/14
- Woodcock Survey 2013
- Wales Chat Survey 2012 & 2013
- Nightingale Survey 2012
- House Martins 2008-2013
Completed surveys 2006-2010
Completed surveys 2000-2005
- Wintering Warblers 2004/05
Completed surveys 1990-1999
- Plover winter flocks 1998
Completed surveys 1980-1989
- Hen Harrier Roosts 1985/86