Research Reports

bto research report 692 cover

BTO Research Reports are scientific papers that have been self-published by the BTO. The following is a full list of those BTO research reports which have been published. 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 copy of a report please contact researchreports [at]

All reports  1-100  101-200  201-300  301-400  401-500  501-600  or  Annual Service reports to JNCC 1992-2005

699. Chris B. Thaxter, Cat Horswill, Kathryn E. Ross, Graham E. Austin, Dawn E. Balmer and Niall H.K. Burton Publication Date: 2017. Urban Breeding Gull Surveys: A Survey Design Simulation. ISBN: 978-1-908581-78-5 60pp £5.00 Download Report (PDF), Download Report (PDF)
692. Henrietta Pringle, Gavin Siriwardena and Mike Toms Publication Date: 2017. Informing best practice for mitigation and enhancement measures for barn owls. ISBN: 978-1-908581-72-3 34pp £10.00 Download Report (PDF)
689. Scragg E S, Thaxter C B, Clewley G D, and Burton N.H.K. Publication Date: 2017. Assessing behaviour of Lesser Black-backed Gulls from the Ribble and Alt Estuaries SPA using GPS tracking devices.  . ISBN: 978-1-908581-75-4 53pp £5.00 Download Report (PDF)
687. Harris, S.J., Massimino, D., Newson, S.E., Eaton, M.A., Marchant, J.H., Balmer, D.E., Noble, D.G., Gillings, S., Procter, D. & Pearce-Higgins, J.W. Publication Date: 2016. The Breeding Bird Survey 2015. ISBN: 978-1-908581-69-3 23pp
684. Graham E. Austin, Teresa M. Frost and Kathryn Ross Publication Date: 2017. Providing Data for Rapid Condition Assessment of Non-Breeding Waterbird SPAs in England: Phase II. ISBN: 978-1-908581-73-0 29pp £5.00 Download Report (PDF)
680. Kathryn E Ross, Niall H K Burton, Dawn E Balmer, Elizabeth M Humphreys, Graham E Austin, Beth Goddard, Helena Schindler-Dite and Mark M Rehfisch Publication Date: 2016. Urban Breeding Gull Surveys: A Review of Methods and Options for Survey Design. ISBN: 978-1-908581-70-9 58pp Download Report (PDF)
677. B Martay, J W Pearce-Higgins, S Gillings & S R Baillie Publication Date: 2016. An assessment of the potential benefits of additional stratification of BBS squares by habitat and accessibility to enhance the monitoring of rare species and habitats. . ISBN: 978-1-908581-59-4 39pp £5.00 Download Report (PDF)
676. Alison Johnston & Aonghais, S.C.P. Cook Publication Date: 2016. How high do birds fly? Development of methods and analysis of digital aerial data of seabird flight heights . 53pp £5.00 Download Report (PDF)
673. Harris, S.J., Massimino, D., Newson, S.E., Eaton, M.A., Balmer, D.E., Noble, D.G., Musgrove, A.J., Gillings, S., Procter, D. & Pearce-Higgins, J.W. Publication Date: 2015. The Breeding Bird Survey 2014. ISBN: 978-1-908581-56-3 24pp
671. Viola H Ross-Smith, Robert A Robinson & Jacquie A Clark Publication Date: 2015. Dispersal and movements of Lesser Black-backed Gull in Europe. ISBN: 978-1-908581-55-6 £5.00 Download Report (PDF)
670. Graham E Austin Publication Date: 2015. The use of Wetland Bird Survey (WeBS) data for rapid condition assessment of non-breeding waterbird SPAs in England. ISBN: 978-1-908581-53-2 21pp £2.50 Download Report (PDF)
669. Elizabeth M. Humphreys, Aonghais S.C.P. Cook and Niall H.K. Burton Publication Date: 2015. Collision, Displacement and Barrier - Effect Concept Note. 37pp Download Report (PDF)
667. Horswill, C., Robinson, Robert A. Publication Date: 2015. Review of seabird demographic rates and density dependence.
666. Chris B. Thaxter, Viola H. Ross-Smith & Aonghais S C P Cook Publication Date: 2016. How high do birds fly? A review of current datasets and an appraisal of current methodologies for collecting flight height data: Literature review . 66pp £5.00 Download Report (PDF)
663. Ian G. Henderson, David Noble, Rachel Taylor & Veronica Mendez Publication Date: 2015. Consultation to the Birds Directive Article 3 Birds of Conservation Concern and Delivery Mechanisms. 113pp £10.00 Download Report (PDF)
662. Baillie, S.R., Marchant, J.H., Leech, D.I., Massimino, D., Sullivan, M.J.P., Eglington, S.M., Barimore, C., Dadam, D., Downie, I.S., Harris, S.J., Kew, A.J., Newson, S.E., Noble, D.G., Risely, K. & Robinson, R.A. Publication Date: 2014. BirdTrends 2014: trends in numbers, breeding success and survival for UK breeding birds. Link to Report
661. Graham Austin & Viola Ross-Smith Publication Date: 2014. Guidance to Interpretation of Wetland Bird Survey Within-Site Trends. ISBN: 978-1-908581-49-5 31pp £2.50 Download Report (PDF)
660. Ian D. Woodward, Viola H. Ross-Smith, Rafael Pérez-Domínguez, Mark M. Rehfisch and Graham E. Austin Publication Date: 2015. The Wash Bird Decline Investigation 2014. ISBN: 978-1-908581-52-5 113pp £10.00 Download Report (PDF)
657. Lucy J. Wright, Veronica Mendez & Niall H.K. Burton Publication Date: 2014. Review of knowledge regarding the effect of major estuarine developments on bird populations with reference to proposals for an airport in the Thames Estuary. ISBN: 978-1-908581-43-3 50pp £5.00 Download Report (PDF)
656. Cook, A.S.C.P., Humphreys, E.M., Masden, E.A., Band, W. & Burton, N.H.K. Publication Date: 2014. The avoidance rates of collision between birds and offshore turbines. Link to Report
655. Calbrade, N.A. Publication Date: 2014. WeBS Low Tide Counts on English SPAs. ISBN: 978-1-908581-44-0 49pp £5.00 Download Report (PDF)
654. Ross-Smith, V.H., Grantham, M.J., Robinson, R.A. & Clark, J.A. Publication Date: 2014. Analysis of Lesser Black-backed Gull data to inform meta-population studies. ISBN: 978-1-908581-39-6 59pp £5.00 Download Report (PDF)
653. Austin, G.E. & Burton, N.H.K. Publication Date: 2014. Notes on the WeBS-Defra Annual Cormorant Index. ISBN: 978-1-908581-45-7 18pp £2.50 Download Report (PDF)
651. Dadam, D., Leech, D.I., Clark, J.A., Robinson, R.A. & Clark, N.A. Publication Date: 2014. Towards a better understanding of predation on breeding meadowbird populations. Phase 1, Year 2: Monitoring wader nest success in relation to predation at Stanny House Farm. ISBN: 978-1-908581-38-9 49pp £5.00 Download Report (PDF)
650. Dadam, D., Leech, D.I., Clark, J.A. & Clark, N.A. Publication Date: 2014. Bearded Tit (Panurus biarmicus) survey at Stanny House Farm. ISBN: 978-1-908581-37-2 28pp £2.50 Download Report (PDF)
648. D A Still, N A Calbrade & C A Holt Publication Date: 2014. Review and analysis of changes in waterbird use of the Mersey Estuary SPA, Mersey Narrows & North Wirral Foreshore SPA and Ribble & Alt Estuaries SPA. ISBN: 978-1-908581-46-4 203pp £20.00 Download Report (PDF)
645. Risely, K., Massimino, D., Newson, S.E., Eaton, M.A., Musgrove, A.J., Noble, D.G., Procter, D. & Baillie, S.R. Publication Date: 2013. The Breeding Bird Survey 2012. ISBN: 978-1-908581-29-7 26pp Download Report
644. Baillie, S.R., Marchant, J.H., Leech, D.I., Massimino, D., Eglington, S.M., Johnston, A., Noble, D.G., Barimore, C., Kew, A., Downie, I.S., Risely, K. & Robinson, R.A. Publication Date: 2013. BirdTrends 2012: trends in numbers, breeding success and survival for UK breeding birds. Link to Report
643. Burton, N.H.K., Thaxter, C.B., Cook, A.S.C.P., Austin, G.E., Humphreys, E.M., Johnston, A., Still D.A. & Wright, L.J. Publication Date: 2013. Ornithology Technical Report for the Proposed Dogger Bank Teesside A and B Offshore Wind Farm Projects. Link to Report
642. N.A. Calbrade Publication Date: 2013. Humber Estuary Low Tide Programme 2011/12. ISBN: 978-1-908581-24-2 168pp £15.00 Download Report (PDF)
638. Ian Henderson & Rob Fuller Publication Date: 2016. Review of the Sites of Special Scientific Interest (SSSI) Selection Guidelines for Breeding Bird Assemblages. ISBN: 978-1-908581-61-7 25pp £2.50 Download Report (PDF)
633. Ian G Henderson Publication Date: 2016. Potential disturbance effects, nesting success and territory placement in Stone Curlews at Porton Down 2010-2012 . ISBN: 978-1-908581-60-0 29pp £2.50 Download Report (PDF)
630. Burton, N.H.K., Austin, G.E., Cook, A.S.C.P., Humphreys, E.M., Johnston, A., Morrison, C.A., Thaxter, C.B. & Wright, L.J. Publication Date: 2012. Ornithological Technical Report for the Proposed Dogger Bank Creyke Beck Offshore Wind Farm Projects.. Link to Report
629. Aonghais S C P Cook, Chris Thaxter, Lucy J Wright, Nick J Moran, Niall H K burton, Jed Andrews, Sophie Barker and Fred Cooke Publication Date: 2014. Analysis of sea-watching data from Holme Bird Observatory, Norfolk. ISBN: 978-1-908581-48-8 110pp £10.00 Download Report (PDF)
628. David J Baker & Robert J Fuller* * Correspondence author Publication Date: 2014. How can research help deliver a 'coherent & resilient ecological network'?. ISBN: 978-1-908581-33-4 43pp £5.00 Download Report (PDF)
624. Risely, K., Massimino, D., Johnston, A., Newson, S.E., Eaton, M.A., Musgrove, A.J., Noble, D.G., Procter, D. & Baillie, S.R. Publication Date: 2012. The Breeding Bird Survey 2011. ISBN: 978-1-908581-07-5 24pp Download Report
622. Neil Calbrade & Nick Mason Publication Date: 2013. Habitat use by Avocet and Dark-bellied Brent Geese on the Deben Estuary over the high tide period. ISBN: 978-1-908581-25-9 21pp £2.50 Download Report (PDF)
618. Cook, A.S.C.P., Johnston, A., Wright, L.J. & Burton, N.H.K. Publication Date: 2013. Strategic Ornithological Support Services. Project SOSS-02. A review of flight heights and avoidance rates of birds in relation to offshore wind farms. ISBN: 978-1-908581-21-1 59pp £5.00 Download Report (PDF)
617. Morrison, C.A., Taylor, R., Hallam, A. & Burton, N.H.K. Publication Date: 2012. The effects on waterbirds of dredging at the Cardiff Bay Barrage: report for 2011/12. ISBN: 978-1-908581-05-1 28pp £2.50 Download Report (PDF)
614. Andy Musgrove, Iain Downie, Mark Hammond, Nick Moran & Karen Wright Publication Date: 2014. Odonata recording within BirdTrack: Non-technical specification. ISBN: 978-1-908581-12-9 24pp £2.50 Download Report (PDF)
612. Chamberlain, D. E., Austin, G.E., Green, R.E. & Burton, N.H.K. Publication Date: 2013. Production of representative Cormorant population trends with confidence limits. ISBN: 978-1-908581-08-2 22pp £2.50 Download Report (PDF)
610. Thaxter, C.B., Ross-Smith, V.H, Clark, N.A, Conway, G.J., Wade, H., Masden, E.A., Rehfisch, M.M, Bouten, W., Burton, N.H.K Publication Date: 2011. Measuring the interaction between marine features of Special Protection Areas with offshore wind farm development zones through telemetry: second breeding season report. 52pp Link to Report
608. Nick Moran & Andy Musgrove Publication Date: 2013. Enhancing data quality of bird records for the National Biodiversity Network. ISBN: 978-1-908581-26-6 27pp £2.50 Download Report (PDF)
603. Elizabeth Humphreys, Paul Kirkland and Dan Chamberlain BTO, Butterfly Conservation) Publication Date: 2013. The Biodiversity in Glasgow (BIG) Project. ISBN: 978-1-908581-14-3 57pp £5.00 Download Report (PDF)
602. Bray, J., Calladine, J. & Thiel, A. Publication Date: 2011. Third year of ornithological surveys at House of Water, East Ayrshire: breeding season 2010 and winter season 2010-11. ISBN: 978-1-906204-99-0 32pp £2.50 Download Report (PDF)
599. Shaw, L.M., Chamberlain, D., Conway, G.J. & Toms, M.P. Publication Date: 2011. Spatial distribution and habitat preferences of the House Sparrow, Passer domesticus in urbanised landscapes. ISBN: 978-1-906204-97-6 27pp Download Report (PDF)
597. Risely, K., Renwick, A.R., Dadam, D., Eaton, M.A., Johnston, A., Baillie, S.R., Musgrove, A.J. & Noble, D.G. Publication Date: 2011. The Breeding Bird Survey 2010. ISBN: 978-1-906204-96-9 Download Report