BTO relies heavily on the efforts of thousands of committed and skilled volunteers, who take part in our long-term monitoring schemes. The data they collect generate robust and long-term evidence describing changes in the populations of birds and other wildlife, which in turn prompts further research and conservation action. BTO continually innovates to improve survey design and ease of participation, while broadening our supporter base is a key aim for the future.
Is bird feeding changing Britain's garden bird communities?
Newly published research from BTO shows how the popular pastime of feeding the birds is significantly shaping garden bird communities in Britain.
BBS Report reveals impact of 'Beast from the East'
The new BBS report shows the impact that severe 2018 weather may have had on some of our birds.
North Wales Urban Gull Survey
Participate in a one-off survey of urban Gulls in North Wales this spring.
A review of raptor and owl monitoring activity across Europe: its implications for capacity building towards pan-European monitoring
Can bird abundance declines be detected by citizen science programmes? A case study using Common Cuckoo Cuculus canorus
Waders wane while geese gain
A major new study led by BTO, working with the Wetland Bird Survey (WeBS) partners, JNCC, RSPB and in association with WWT, provides detailed information on the importance of Great Britain for waterbirds each winter.
Spotted Flycatcher Appeal
Help us pinpoint why Spotted Flycatchers are dying, and address the alarming declines that we have charted over the last 50 years.
Effects of individual misidentification on estimates of survival in long-term mark–resight studies
Land sparing and bird conservation
As demand for food increases, a crucial question in conservation is how to limit the negative impacts of agriculture on biodiversity. ‘Land sparing’ has been proposed as a strategy to address this problem, with high-yield agriculture minimising the area of farmland so that other land can be spared...
Spatial and habitat variation in aphid, butterfly, moth and bird phenologies over the last half century
Representing migration routes from re‑encounter data: a new method applied to ring recoveries of Barn Swallows (Hirundo rustica) in Europe
Habitat- and species-mediated short- and long-term distributional changes in waterbird abundance linked to variation in European winter weather.
Open access atlases
BTO has been working with volunteer-sourced atlas data for many decades. Now we are taking the bold step of making the full archive of distribution data freely available for anyone to use.
Help monitor waders in NI grasslands
Help investigate whether Northern Irish lowland grasslands are supporting breeding waders.
A tale of two plovers
BTO research sheds light on the differing fortunes of two small UK-breeding waders.
English Farm Woodland Bird Survey
Help collect data on how birds have colonised woods planted in farmland.
An assessment of the state of nature in the United Kingdom: A review of findings, methods and impact
Help learn how farmland bird fare in winter
Help build a picture of how our winter birds fare on lowland farmland in England.
When is enough enough? Effective sampling protocols for estimating the survival rates of seabirds with mark-recapture techniques.
Listen out for Tawny Owls this winter
Anyone who can identify a Tawny Owl call can take part in this survey - listen out in your garden or green space.
How birdwatchers can tell us about declining mammals
The UK’s mammals present particular challenges for monitoring; they live in a wide variety of habitats, vary enormously in size and can be very difficult to see, but as this paper shows, Britain’s army of volunteer bird surveyors could come to the rescue.