BTO Research Reports are scientific papers that have been self-published by the BTO. The following is a full list of the published BTO research reports. Most are free to download, and links to Abstracts are included where possible.
Numbers missing from the list are those allocated but which were never produced or which have not been published. BTO recognises that, particularly in respect of commercially sensitive cases, a period of confidentiality is appropriate for some projects. However, in the interests of scientific development and dissemination of information, we encourage clients to permit publication as soon as it is reasonable to do so.
- If you wish to purchase a physical copy of a report please contact researchreports@bto.org.
- More information about our Annual Service reports to JNCC 1992-2005.
Assessment of recent Hen Harrier population trends in England through population modelling
This study uses a population modelling approach to explore the effects of changes in rates of productivity, survival, and settlement on population growth in the English population of Hen Harriers.
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Not in the countryside please! Investigating UK residents’ perceptions of an introduced species, the ring-necked parakeet (Psittacula krameri)
Author: Pirzio-Biroli, A., Crowley, S.L., Siriwardena, G.M., Plummer, K.E., Schroeder, J. & White, R.L.
Published: 2024
The Ring-necked Parakeet is a non-native species in Europe, with more than 90 established breeding populations across the continent, particularly in urban areas. The UK, and Greater London especially, is home to the largest of these non-native European populations. This study used an online survey to examine people’s perception of this species across the UK, and found that negative views of Ring-necked Parakeets are stronger in rural areas than in towns and cities.
02.05.24
Papers
Waterbirds in the UK 2022/23
Author: Woodward, I.D., Calbrade, N.A., Birtles, G.A., Feather, A., Peck, K., Wotton, S.R., Shaw, J.M., Balmer, D.E. & Frost, T.M.
Published: Winter 2024
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.Data from this edition of Waterbirds in the UK provide further evidence that wintering ducks, geese, swans and waders are adapting to climate change by altering their migration.
25.04.24
Reports Waterbirds in the UK
Use of dwarf shrubland–grassland mosaics by a nomadic predatory bird, the Short-eared Owl Asio flammeus
Author: Author(s): Calladine, J., Southall, C., Wetherhill, A. & Morrison, N.
Published: 2024
Understanding the habitat requirements of Short-eared Owls can inform conservation action for this species. Given the vast distances that individual Short-eared Owls can travel over the course of a season, we need to understand how these requirements may vary between locations.
22.04.24
Papers
Seabird population and demographic monitoring in the UK: a review and recommendations for future sampling
Author: O’Hanlon, N.J., Harris, S.J., Thaxter, C.B., Boersch-Supan, P.H., Robinson, R.A., Balmer, D.E. & Burton, N.H.K.
Published: 2024
The Seabird Monitoring Programme, funded by the British Trust for Ornithology and Joint Nature Conservation Committee (JNCC), in association with the Royal Society for the Protection of Birds, aims to ensure that sample data on seabird breeding numbers and breeding productivity are collected both regionally and nationally, for 25 species of seabird that regularly breed in Britain and Ireland, to enable their conservation status to be assessed.
18.04.24
Reports Research reports
Northern Ireland Seabird Report 2023
Author: Booth, K.J. & El Haddad, H.
Published: 2024
The report includes detailed information about the population trends and breeding success of seabirds in Northern Ireland, over the 2023 breeding season. Notably, Fulmar and Kittiwake populations are reported to be experiencing continued declines, while Guillemot, Common Gull and Herring Gull populations show increases at most breeding sites.
15.04.24
Reports Northern Ireland Seabird Report
