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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Human activity shapes the wintering ecology of a migratory bird
Author: Van Doren, B.M., Conway, G.J., Phillips, R.J., Evans, G.C., Roberts, G.C.M., Liedvogel, M. & Sheldon, B.C.
Published: 2021
New research involving BTO provides further evidence of how humans are shaping the natural world through simple changes in our own back gardens.
14.04.21
Papers

Predator management for breeding waders: a review of current evidence and priority knowledge gaps
Author: Laidlaw, R.A., Smart, J., Ewing, H., Franks, S.E., Belting, H., Donaldson, L., Hilton, G.M., Hiscock, N., Hoodless, A.N., Hughes, B., Jarrett, N.S., Kentie, R., Kleyheeg, E., Lee, R., Roodbergen, M., Scott, D.M., Short, M.J., Syroechkovskiy, E.E., Teunissen, W., Ward, H., White, G. & Gill, J.A,
Published: 2021
12.04.21
Papers

Incidence of road mortality in ringed raptors and owls: a spatial analysis
Author: Hanmer, H.J. & Robinson, R.A.
Published: 2021
06.04.21
Reports

Long-term and large-scale multispecies dataset tracking population changes of common European breeding birds
Author: Brlík, V., Šilarová, E., Škorpilová, J., Alonso, H., Anton, M., Aunins, A., Benkö, Z., Biver, G., Busch, M., Chodkiewicz, T., Chylarecki, P., Coombes, D., de Carli, E., del Moral, J.C., Derouaux, A., Escandell, V., Eskildsen, D.P., Fontaine, B., Foppen, R.P.B., Gamero, A., Gregory, R.D., Harris, S., Herrando, S., Hristov, I., Husby, M., Ieronymidou, C., Jiquet, F., Kålås, J.A., Kamp, J., Kmecl, P., Kurlavičius, P., Lehikoinen, A., Lewis, L., Lindström, Å., Manolopoulos, A., Martí, D., Massimino, D., Moshøj, C., Nellis, R., Noble, D., Paquet, A., Paquet, J.-Y., Portolou, D., Ramírez, I., Redel, C., Reif, J., Ridzoň, J., Schmid, H., Seaman, B., Silva, L., Soldaat, L., Spasov, S., Staneva, A., Szép, T., Florenzano, G.T., Teufelbauer, N., Trautmann, S., van der Meij, T., van Strien, A., van Turnhout, C., Vermeersch, G., Vermouzek, Z., Vikstrøm, T., Voříšek, P., Weiserbs, A. & Klvaňová, A.
Published: 2021
26.03.21
Papers

Northern Ireland Seabird Report 2020
Author: Booth Jones, K.
Published: 2021
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 Northern Ireland Seabird Report
