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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Northern Ireland Seabird Report 2016
Author: Leonard, K. & Wolsey, S.
Published: 2017
This is the fourth edition of the Northern Ireland Seabird Report, covering 2016. This report is the published outcome of the work of the BTO NI Seabird Coordinator, and the activities of the evolving Northern Ireland Seabird Network of volunteers and organisations, such as National Trust, Ulster Wildlife and the RSPB, that have provided data for 2016 and previous years.
01.03.17
Reports Northern Ireland Seabird Report

Informing best practice for mitigation and enhancement measures for Barn Owls
Author: Henrietta Pringle, Gavin Siriwardena and Mike Toms
Published: 2017
Using the BTO’s ring-recovery database we have been able to analyse dispersal movements, with the aim of providing insight into Barn Owl movements in the UK. The results of this work suggest that new, high-quality habitat aimed at mitigating negative effects of HS2 on Barn Owls should be located between 3 km and 15 km away from the railway route, depending on the importance placed on minimising juvenile, as opposed to adult, mortality.
20.02.17
Reports
Providing Data for Rapid Condition Assessment of Non-Breeding Waterbird SPAs in England: Phase II
Author: Graham E. Austin, Teresa M. Frost and Kathryn Ross
Published: 2017
This report explores means by which a standardised trend analysis of data from the Wetland Bird Survey (WeBS) can aid rapid assessment of condition for non-breeding waterbird SPAs in England.For supporting material please contact Natural England.
31.01.17
Reports
BirdTrends 2016
Author: Robinson, R.A., Leech, D.I., Massimino, D., Woodward, I., Eglington, S.M., Marchant, J.H., Sullivan, M.J.P., Barimore, C., Dadam, D., Hammond, M.J., Harris, S.J., Noble, D.G., Walker, R.H. & Baillie, S.R.
Published: 2017
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.
01.01.17
Reports BirdTrends

State of Nature report 2016
Author:
Published: 2016
The State of Nature report is an assessment of how nature is doing across the UK. As well as an overarching assessment of UK flora and fauna, there are separate reports for England, Scotland, Northern Ireland and Wales to look at each country in more depth. The reports pool data and expertise from 53 nature conservation and research organisations, a partnership unparalleled in UK conservation.View a summary presentation of the State of Nature 2016.The BTO is proud to be a founding member of the State of Nature Partnership and our long-term volunteer-based monitoring schemes are key to such assessments. It is extremely important that well-structured monitoring to track changes in biodiversity continues and that good evidence is collected to identify the causes of change. Publicising the results and engagement with the public as well as policy-makers is essential to the success of any project based on citizen science.
14.09.16
Reports State of Nature
