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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Understanding seabird behaviour at sea part 2: improved estimates of collision risk model parameters
19.10.23
Reports
Strategic study of collision risk for birds on migration and further development of the stochastic collision risk modelling tool (Work Package 1: Strategic review of birds on migration in Scottish waters)
Report by British Trust for Ornithology, Royal Society for the Protection of Birds and ECO-LG to The Scottish Government, Crown Estate Scotland and The Crown Estate.
01.10.23
Reports
State of Nature report 2023
The State of Nature 2023 report documents how human impacts are driving sweeping changes in wildlife in 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 more than 60 nature conservation and research organisations, a partnership unparalleled in UK conservation.
28.09.23
Reports
Analysis of wintering waterbird population trends for the Lough Neagh and Lough Beg Special Protection Area (SPA)
This analysis of Wetland Bird Survey (WeBS) data for the Lough Neagh and Lough Beg SPA provides details of wintering waterfowl population changes around the loughs and assists in identifying potential research questions to be pursued.
24.08.23
Reports
Bioacoustics as a novel approach for detecting the presence of Brown Rats on seabird islands
Static acoustic bat detectors were deployed over a six-month winter survey season, to explore the possibility for using acoustics to detect and monitor the presence of Brown Rats on Rathlin Island in Northern Ireland. This report provides an overview of the survey coverage and main results from 2022/23.This research used the BTO Acoustic Pipeline to process and analyse sound recordings.
27.07.23
Reports
Assessing movements of Lesser Black-backed Gulls using GPS tracking devices in relation to the Galloper Wind Farm
A programme of Lesser Black-backed Gull Larus fuscus tagging and tracking work was initiated within the Alde-Ore Estuary Special Protection Area during the 2019 breeding season, and continued throughout the 2020 breeding season, in order to fulfil requirements of the Galloper Wind Farm Ornithological Monitoring Programme and test key predictions of the Environmental Statement. The results from both the 2019 and 2020 breeding seasons of tracking are summarised within this report.
13.07.23
Reports
Development of an Upland Bird Indicator for the UK and for England
When the suite of wild bird indicators was first developed for England and the UK in the late 1990s, it was felt that insufficient data was available to be able to produce a sufficiently robust indicator for upland habitats. With the continuation and growth of the BTO/JNCC/RSPB UK Breeding Bird Survey, targeted efforts to improve coverage in the uplands (such as the NE-funded Upland Breeding Bird Survey and the BBS’s Upland Rovers initiative), as well as further repeated surveys of scarcer breeding species under the SCARABBS (Statutory Conservation Agency and RSPB Annual Breeding Bird Scheme) programme, it was considered now feasible to develop a robust and sufficiently long-term upland indicator alongside those for other habitats. In doing so we can fill an obvious gap in the reporting on England and the UK’s biodiversity, on the drivers upon it, and the success of efforts to protect our important upland environment.
06.07.23
Reports
Waterbirds in the UK 2021/22
Waterbirds in the UK presents the results of the annual Wetland Bird Survey Report. It provides a single, comprehensive source of information on the current status and distribution of waterbirds in the UK for those interested in the conservation of the populations of these species and the wetland sites they use.
27.04.23
Reports