Reports

Reports

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, which includes BBS reports, Waterbirds in the UK (WeBS) reports and SMP 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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Analysis of waterbird population trends for Northern Ireland’s sea loughs: assessing the potential impacts of aquaculture and disturbance: Part 2 – Belfast Lough and Lough Foyle

Author: Author(s): Booth Jones, K., O’Connell, P., Calbrade, N. & Austin, G.

Published: 2023

This study aims to produce the first sector-level analysis of Wetland Bird Survey (WeBS) data in Northern Ireland, on two of the sea-lough sites that host aquaculture activities. This will improve understanding of the fluctuations in numbers of waterbirds within the sites and inform the consenting of operations and assessment of development plans on these SPAs.

17.03.23

BTO Research Reports

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Analysis of waterbird population trends for Northern Ireland’s sea loughs: assessing the potential impacts of aquaculture and disturbance. Part 1 – Strangford Lough and Carlingford Lough

Author: Author(s): Booth Jones, K., Calbrade, N., Woodward, I. & Austin, G.

Published: 2023

This study aims to produce the first sector-level analysis of Wetland Bird Survey (WeBS) data in Northern Ireland, on two of the sea-lough sites that host aquaculture activities. This will improve understanding of the fluctuations in numbers of waterbirds within the sites and inform the consenting of operations and assessment of development plans on these SPAs.

17.03.23

BTO Research Reports

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Northern Ireland Seabird Report 2022

Author: Booth Jones, K.

Published: 2023

The 10th NI Seabird Report charts the fortunes of Northern Ireland's breeding seabird species and sheds light on the initial impact of avian influenza. The report highlights that Fulmars continue to be at a low ebb in Northern Ireland, with numbers at most sites monitored in 2022 mostly stable or declining slightly. Kittiwake numbers continue to increase at monitored sites, while the numbers of Common Terns appear to have recovered after a bad year in 2020, when the total coastal Northern Irish population (including Belfast Lough RSPB, Carlingford Lough, Cockle Island, Larne Lough and Strangford Lough) more than halved from 2019 levels due to losses at Larne and Belfast Loughs. The report also documents the impacts of highly pathogenic avian influenza on Northern Ireland's seabirds, reveals how detection dogs are being used to monitor burrow-nesting species, explores the foraging behaviour of Black Guillemots, and highlights the monitoring work being done in Strangford Lough.

15.03.23

Reports Northern Ireland Seabird Report

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Highly pathogenic avian influenza in wild birds in the United Kingdom in 2022: impacts, planning for future outbreaks, and conservation and research priorities.

Author: Pearce-Higgins, J.W., Humphreys, E.M., Burton, N.H.K., Atkinson, P.W., Pollock, C., Clewley, G.D., Johnston, D.T., O’Hanlon, N.J., Balmer, D.E., Frost, T.M., Harris S.J. & Baker, H.

Published: 2023

The Joint Nature Conservation Committee (JNCC) and BTO organised a virtual workshop to develop thinking to support ongoing efforts to manage the highly pathogenic avian influenza (HPAI) outbreak, and to consider longer-term evidence requirements to enable positive conservation actions and species recovery. The HPAI workshop report includes discussions about the impacts of the disease, planning for future outbreaks, and conservation and research priorities.

02.03.23

BTO Research Reports

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BirdTrends 2022

Author: Massimino, D., Woodward, I.D., Barber, L., Barimore, C., Harris, S.J., Leech, D.I., Noble, D.G., Walker, R.H., Baillie, S.R. & Robinson, R.A.

Published: 2023

The BirdTrends 2022 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. For each of 121 species, users can quickly access the latest information on trends in population size, breeding performance and survival rates, as measured by our long-term monitoring schemes. For each species, you will find: The latest conservation listings and estimates of UK population size A summary of changes in the size of the population and the possible causes of these changes Graphs and tables showing changes in UK population size, breeding performance and survival since our monitoring began Wherever possible, graphs and tables separately for UK countries (England, Scotland, Wales and Northern Ireland) Alerts, drawing attention to population declines of greater than 25%, or greater than 50%, that have occurred over the the most recent five-, ten- and 25-year assessment periods and the maximum period available (usually 50 years). Text, tables, graphs and presentation for each species are updated annually to include the latest results alongside interpretative material from the literature. Information on demographic trends and on the causes of change is gradually being expanded. Read the full report

15.02.23

Reports BirdTrends

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Bailiwick Bat Survey 2022 Report

Author: Newson, S.E., Allez, S.L., Coule, E.K., Guille, A.W., Henney, J.M., Higgins, L., McLellan, G.D., Simmons, M.C., Sweet, E., Whitelegg, D. & Atkinson, P.W.

Published: 2023

This report presents the main findings from survey work delivered using passive acoustic monitoring devices deployed across the Bailiwick of Guernsey. Through the surveys that we support we aim to improve knowledge and understanding of species distribution and activity, covering a range of taxonomic groups, including bats, small terrestrial mammals and insects. Through this approach we provide robust datasets that can be used to inform better decision-making processes.

23.01.23

BTO Research Reports

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