BTO publishes various reports, from those covering the annual results of core surveys, through scientific studies, and on to those produced in partnership with other organisations. Many of these are published as BTO Research Reports. You can access all of our reports from here, though note that we are currently updating the reports section, working backwards through time to bring all of the report pages into a consistent format. You can read our Annual Report and Accounts in the Governance section.
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Collision, Displacement and Barrier - Effect Concept Note
01.01.15
Reports
Multi-species spatially-explicit indicators reveal spatially structured trends in bird communities

The BTO/RSPB/JNCC Breeding Bird Survey is the primary source of information about changes in national populations of over 100 bird species. Here we describe analyses of this dataset which has identified important spatial variation in population indicators, highlighting previously unreported declines in habitat specialists in southern and eastern Britain.
01.01.15
Reports
BirdTrends 2014

The BirdTrends 2020 report is a one-stop shop for authoritative information about the population status of the common breeding birds of the wider UK countryside. The report is based on data gathered by the many thousands of volunteers who contribute to BTO-led surveys.
01.01.15
Reports
Consultation to the Birds Directive Article 3 Birds of Conservation Concern and Delivery Mechanisms
01.01.15
Reports
Bird Trends 2015: trends in numbers, breeding success and survival for UK breeding birds
01.01.15
Reports
The avoidance rates of collision between birds and offshore turbines

Report of work carried out by the British Trust for Ornithology in collaboration with the Environmental Research Institute on behalf of the Marine Scotland Science.Accurately estimating birds’ risk of collision with offshore wind turbines is a key part of the decision-making process for proposed renewable developments. However, the evidence base for quantifying the number of birds likely to avoid colliding with turbines is limited. Recent BTO-led work helping to fill this gap, improving the understanding of the impacts of offshore renewables on marine wildlife.
03.12.14
Reports
BirdTrends 2013

The BirdTrends 2020 report is a one-stop shop for authoritative information about the population status of the common breeding birds of the wider UK countryside. The report is based on data gathered by the many thousands of volunteers who contribute to BTO-led surveys.
01.08.14
Reports