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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Global assessment of marine plastic exposure risk for oceanic birds
Author: Clark, B.L. et al.
Published: 2023
04.07.23
Papers
Seeing the wood for the trees, irregular silviculture supports bat populations in conifer plantations
Author: Cook, P., Alder, D., Hordley, L., Newson, S.E. & Pengelly, D.
Published: 2023
Some woodland management practices may improve structural diversity and benefit bats and other species, but our understanding of responses to alternative woodland management techniques remains limited. This paper addresses this knowledge gap for bats.
28.06.23
Papers
Spring arrival of the Common Cuckoo at breeding grounds is strongly determined by environmental conditions in tropical Africa
Author: Davies, J.G., Kirkland, M., Miller, M.G.R., Pearce-Higgins, J.W., Atkinson, P.W. & Hewson, C.M.
Published: 2023
The average spring arrival dates of many summer migrants have advanced over recent decades, but the Cuckoo is one of several species in which this has not happened. The long-term decline in UK Cuckoo populations, together with the link between a changing climate and changing spring arrival dates more generally, raises the question as to why there has been such a limited shift in Cuckoo arrival times. This study sets out to address this question.
21.06.23
Papers
The phenology and clutch size of UK Blue Tits does not differ with woodland composition
Author: Branston, C.J., Whittingham, M.J., Phillimore, A.B., Leech, D. & Willis, S.G.
Published: 2023
17.06.23
Papers
Changes in breeding wader populations of the Uist machair and adjacent habitats between 1983 and 2022
Author: Calladine, J., Fuller, R., Hodkinson, D., Franks, S. & Boyle, J.
Published: 2023
Periodic surveys of machair and associated habitats on the west coast of North Uist, Benbecula and South Uist have documented marked changes in the composition of an important breeding wader assemblage. Within the study area of there was a 25% decline in the total number of breeding waders recorded between 1983 and 2022.
15.06.23
Papers
