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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Livestock grazing impacts components of the breeding productivity of a common upland insectivorous passerine: Results from a long‐term experiment
Author: Malm, L.E., Pearce‐Higgins, J.W., Littlewood, N.A., Karley, A.J., Karaszewska, E., Jaques, R., Pakeman, R.J., Redpath, S.M. & Evans, D.M.
Published: 2020
01.06.20
Papers
Evaluating the potential for bird‐habitat models to support biodiversity‐friendly urban planning
Author: Plummer, K.E., Gillings, S. & Siriwardena, G.M.
Published: 2020
This BTO study modelled the abundance of breeding birds within built-up areas, exploring how this varied in relation to the characteristics of these urban environments. It highlighted the potential of an evidence-based – and spatially explicit – evaluation of urban development impacts on biodiversity, by predicting the consequences for bird numbers.
01.06.20
Papers

Waterbirds in the UK 2018/19
Author: Teresa M. Frost, Neil A. Calbrade, Gillian A. Birtles, Heidi J. Mellan, Colette Hall, Anna E. Robinson, Simon R. Wotton, Dawn E. Balmer and Graham E. Austin.
Published: 2020
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.
16.05.20
Reports Waterbirds in the UK

What motivates the masses: Understanding why people contribute to conservation citizen science projects
Author: Maund, P.R., Irvine, K.N., Lawson, B., Steadman, J., Risely, K., Cunningham, A.A. & Davies, Z.G.
Published: 2020
12.05.20
Papers
A schematic sampling protocol for contaminant monitoring in raptors
Author: Espín, S., Andevski, J., Duke, G., Eulaers, I., Gómez-Ramírez, P., Hallgrimsson, G.T., Helander, B., Herzke, D., Jaspers, V.L.B., Krone, O., Lourenço, R., María-Mojica, P., Martínez-López, E., Mateo, R., Movalli, P., Sánchez-Virosta, P., Shore, R.F., Sonne, C., van den Brink, N.W., van Hattum, B., Vrezec, A., Wernham, C. & García-Fernández, A.J.
Published: 2020
12.05.20
Papers