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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Assessing movements of Lesser Black-backed Gulls using GPS tracking devices in relation to the Walney Extension and Burbo Bank Extension Offshore Wind Farms

Offshore wind farm developments form a major part of the UK government’s commitment to obtain 15% of the UK’s energy needs from renewable sources by 2020. However, there is concern over the potential detrimental effects that offshore developments may have on bird populations.
17.08.21
Reports
Designing effective survey and sampling protocols for passive acoustic monitoring as part of the national bat monitoring

The UK has one of the best developed bat monitoring programmes in the world, but despite this, six of 17 resident bat species in the UK are not currently monitored sufficiently to produce population trends. Large-scale deployment of passive acoustic methods using full spectrum bat detector technology offers a lot of potential for transforming routine monitoring of bat numbers, but it is essential that effective survey and sampling protocols are used if this potential is to be realised.
11.06.21
Reports
The Breeding Bird Survey 2020

Despite limited 2020 data due to COVID-19 restrictions, the latest BTO/RSPB/JNCC Breeding Bird Survey report reveals interesting trends.
13.05.21
Reports
Pilot study to investigate Oystercatcher (Haematopus ostralegus) feeding behaviour to enhance bird food modelling and shellfisheries management on The Wash

26.04.21
Reports
Waterbirds in the UK 2019/20

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.
15.04.21
Reports
Incidence of road mortality in ringed raptors and owls: a spatial analysis

06.04.21
Reports
Northern Ireland Seabird Report 2020

Volunteer-led monitoring of seabirds was severely impacted by COVID-19 restrictions in 2020, but surveys were able to be carried out by the National Trust and the Royal Society for the Protection of Birds.Tern colonies around Northern Ireland had a catastrophic year. Despite this, many seabirds, such as Guillemots, had a good breeding season.
18.03.21
Reports
BirdTrends 2020

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.
03.03.21
Reports