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Research Reports

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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] bto.org.

More information about our Annual Service reports to JNCC 1992-2005.

200. Wilson, A.M., Marchant, J.H., Gregory, R.D., Siriwardena, G.M. & Baillie, S.R. Publication Date: 1998. Enhancements for monitoring of opportunistic bird populations. ISBN: 0-903793-95-4 56pp £5.00 Download Report (PDF)
198. Crick, H.Q.P., Baillie, S.R., Balmer, D.E., Bashford, R.I., Dudley, C., Glue, D.E., Gregory, R.D., Marchant, J.H., Peach, W.J. & Wilson, A.M Publication Date: 1998. Breeding birds in the wider countryside: their conservation status (1972-1996). ISBN: 0-903793-99-7 170pp £15.00 Download Report (PDF)
196. Browne, S.J. & Impey, A. Publication Date: 1998. An analysis and interpretation of the surveys of breeding and winter birds at Titley Court Farm, Herefordshire in 1997/98. ISBN: 1-902576-13-6 48pp £5.00 Download Report (PDF)
195. Vickery, J.A. & Fuller, R.J. Publication Date: 1998. Use of cereal fields by birds. A review in relation to field margin managements. ISBN: 1-902576-08-X 112pp £10.00 Download Report (PDF)
194. Gough, S.J. & Fuller, R.J. Publication Date: 1998. Scrub management for conservation in lowland England: practices, problems and possibilities. ISBN: 0-903793-96-2 64pp £5.00 Download Report (PDF)
193. Armitage, M.J.S., Rehfisch, M.M. & Wernham, C.V. Publication Date: 1997. The 1997 Breeding Sawbill Survey. ISBN: 1-904870-23-6 50pp £5.00 Download Report (PDF)
190. Musgrove, A.J. Publication Date: 1997. Validation of WeBS methodology - the relationship between waterfowl counts carried out at high and low tide. ISBN: 0-903793-93-9 40pp £5.00 Download Report (PDF)
188. Clark, N.A. & Evans, K.L. Publication Date: 1997. Setting up monitoring and the ringing of rehabilitated birds following the Sea Empress Oil Spill. ISBN: 1-902576-01-2 15pp £2.50 Download Report (PDF)
187. Crick, H.Q.P., Baillie, S.R., Balmer, D.E., Bashford, R.I., Dudley, C., Glue, D.E., Gregory, R.D., Marchant, J.H., Peach, W.J. & Wilson, A.M. Publication Date: 1997. Breeding birds in the wider countryside: their conservation status (1971-1995). ISBN: 0-903793-88-1 165pp £15.00 Download Report (PDF)
186. Wernham, C.V., Peach, W.J. & Browne, S. Publication Date: 1997. Survival rates of rehabilitated Guillemots. ISBN: 0-903793-71-7 40pp £5.00 Download Report (PDF)
185. Wernham, C.V., Armitage, M., Hughes, B., Hughes, R., Holloway, S.J., Kershaw, M., Madden, J.R., Marchant, J.H., Peach, W.J. & Rehfisch, M.M. (Eds Rehfisch, M.M., Wernham, C.V. & Marchant, J.H.) Publication Date: 1999. Population, distribution, movements and survival of fish-eating birds in Great Britain. ISBN: 1-85112-3237
184. Evans, K., Impey, A. & Gough, S. Publication Date: 1997. A preliminary study of fish refuges as a means of mitigating perceived Cormorant damage to a Put and Take Fishery. ISBN: 978-1-906204-09-9 19pp £2.50 Download Report (PDF)
183. Burton, N.H.K., Armitage, M.J.S., Rehfisch, M.M. & Clark, N.A. Publication Date: 1997. The effect of the Cardiff Bay Barrage on waterfowl populations. 8. Distribution and movement studies August 1996-May 1997. ISBN: 1-902576-87-X 166pp £15.00 Download Report (PDF)
182. Armitage, M.J.S., Burton, N.H.K. & Rehfisch, M.M. Publication Date: 1997. The abundance and distribution of waterfowl within Milford Haven after the Sea Empress Oil Spill. ISBN: 0-903793-87-3 124pp £10.00 Download Report (PDF)
181. Gregory, R.D., Bashford, R.I., Balmer, D.E., Marchant, J.H., Wilson, A.M. & Baillie, S.R. Publication Date: 1997. Breeding Bird Survey 1995-1996. Report No. 2. ISBN: 0-903793-79-2 16pp Download Report
179. Holloway, S. Publication Date: 1997. Winter distribution and disturbance of wildfowl and waders on Findhorn Bay. ISBN: 0-903793-89-X 136pp £10.00 Download Report (PDF)
178. Musgrove, A.J. & Holloway, S.J. Publication Date: 1997. Counting waterfowl on large estuaries at low tide. ISBN: 0-903793-82-2 42pp £5.00 Download Report (PDF)
177. Toms, M.P. Publication Date: 2001. Project Barn Owl - evaluation of an annual monitoring programme. ISBN: 1-902576-36-5 38pp £5.00 Download Report (PDF)
176. Marchant, J.H., Wilson, A.M., Chamberlain, D.E., Gregory, R.D. & Baillie, S.R. Publication Date: 1997. Opportunistic bird species - enhancements for the monitoring of populations. 70pp £5.00 Download Report (PDF)
175. Balmer, D.E. & Peach, W.J. Publication Date: 1996. Review of natural avian mortality rates. ISBN: 0-903793-83-0 27pp £2.50 Download Report (PDF)
174. Burton, N.H.K., Toomer, D.K., Balmer, D.E., Rehfisch, M.M. & Clark, N.A. Publication Date: 1997. The effect of the Cardiff Bay Barrage on waterfowl populations 7. Distribution and movement studies August 1995 - May 1996. ISBN: 1-902576-86-1 136pp £10.00 Download Report (PDF)
173. Armitage, M.J.S., Burton, N.H.K., Rehfisch, M.M. & Clark, N.A. Publication Date: 1997. The abundance and distribution of waterfowl within Milford Haven after the Sea Empress oil spill. Interim Report January 1997. ISBN: 1-904870-21-X 40pp £5.00 Download Report (PDF)
172. Browne, S.J., Fuller, R.J. & Langston, R. Publication Date: 1996. An assessment of bird populations in selected forest plots: a contribution to the Biodiversity Research Programme. ISBN: 0-903793-77-6 70pp £5.00 Download Report (PDF)
171. Burton, N.H.K., Watts, P.N., Crick, H.Q.P. & Carter, N. Publication Date: 1996. The effects of pre-harvesting operations on birds nesting in Oilseed Rape Brassica napus. ISBN: 0-903793-65-2 34pp £2.50 Download Report (PDF)
166. Forrest,C. & Carter, N. Publication Date: 1996. Provision of breeding bird atlas data to the Countryside Information System. ISBN: 978-1-906204-15-0 32pp £2.50 Download Report (PDF)
165. Marchant, J.H., Forrest, C. & Greenwood, J.J.D. Publication Date: 1998. A review of large-scale generic population monitoring schemes in Europe . ISBN: 0-903793-92-X 92pp £10.00 Download Report (PDF)
164. Fuller, R.J. Publication Date: 1996. Relationships between grazing and birds with particular reference to sheep in the British uplands. ISBN: 0-903793-66-0 94pp £10.00 Download Report (PDF)
161. Toomer, D.K., Balmer, D.E., Rehfisch, M.M. & Clark, N.A. Publication Date: 1995. The effect of the Cardiff Bay Barrage on waterfowl populations 6. Distribution and movement studies August 1994 - May 1995. ISBN: 1-902576-93-4 141pp £10.00 Download Report (PDF)
160. Austin, G., Rehfisch, M.M., Holloway, S.J., Clark, N.A., Balmer, D.E., Yates, M.G., Clarke, R.T., Swetnam, R.D., Eastwood, J.A., dit Durell, S.E.A.le V., West, J.R. & Goss-Custard, J.D. Publication Date: 1996. Estuaries, sediments and shorebirds. lll. Predicting waterfowl densities on intertidal areas. 122pp £10.00
159. Crick, H.Q.P. & Baillie, S.R. Publication Date: 1996. A review of the BTO's Nest Record Scheme. Its value to the Joint Nature Conservation Committee and Country Agencies, and its methodology. ISBN: 0-903793-61-X 125pp £10.00 Download Report (PDF)
158. Browne, S.J., Austin, G.E. & Rehfisch, M.M. Publication Date: 1995. Evaluation of bird monitoring requirements for the United Kingdom's non-estuarine coastline. ISBN: 0-903793-85-7 30pp £2.50 Download Report (PDF)
156. Holloway, S.J., Rehfisch, M.M., Clark, N.A., Balmer, D.E., Austin, G., Yates, M.G., Swetnam, R.D., Eastwood, J.A., Clarke, R.T., dit Durell, S.E.A.le V., Goss-Custard, J.D. & West, J.R. Publication Date: 1995. Estuaries, sediments and shorebirds. ll. Shorebird usage of intertidal areas. 270pp £20.00
154. British Trust for Ornithology & Institute of Arable Crops Research - Rothamsted. Publication Date: 1995. The effect of organic farming regimes on breeding and winter bird populations - Parts I-IV. ISBN: 0-903793-60-1 220pp £15.00 Download Report (PDF)
153. Balmer, D.E., Henderson, I.G. & Clark, N.A. Publication Date: 1995. A study of the risk of collision with power lines by waterbirds in winter at Shotton Steel Works, North Wales. ISBN: 0-903793-73-3 32pp £2.50 Download Report (PDF)
151. Balmer, D.E. & Clark, N.A. Publication Date: 1995. Setting Forth Ornithological Assessment: Analysis of the Common Birds Census of St. Margaret's Marsh. ISBN: 0-903793-74-1 12pp £2.50 Download Report (PDF)
150. Austin, G.E. & Gregory, R.D. Publication Date: 1995. Evaluation of bird monitoring requirements in National Parks. ISBN: 0-903793-54-7 52pp £5.00 Download Report (PDF)
149. Fuller, R.J. & Wilson, J.D. Publication Date: 1995. The ecology of seed-eating birds in relation to agricultural practices: current research and future directions. ISBN: 0-903793-51-2 28pp £2.50 Download Report (PDF)
148. Marchant, J.H. & Gregory, R.D. Publication Date: 1994. Population changes of riparian birds along rivers and canals in the Severn-Trent region between 1989 and 1993.. ISBN: 0-903793-50-4 32pp £2.50 Download Report (PDF)
147. Donald, P.F. Publication Date: 1995. Changes in the distributions of breeding birds in England, Scotland and Wales: 1968-72 to 1988-91. ISBN: 0-903793-52-0 56pp £5.00 Download Report (PDF)
146. Toomer, D.K., Browne, S.J. & Clark, N.A. Publication Date: 1994. The effect of the Cardiff Bay barrage on waterfowl populations 5. Distribution and movement studies August 1993-May 1994. ISBN: 1-902576-92-6 167pp £15.00 Download Report (PDF)
145. Clark, N.A., Toomer, D.K. & Browne, S.J. Publication Date: 1995. The usage of the intertidal mudflats at the Rhymney, Cardiff, by waders and wildfowl: 2 supplementary data on upper areas December 1993 - February 1994. ISBN: 1-904870-55-4 15pp £2.50 Download Report (PDF)
144. Henderson, I.G., Langston, R.H.W. & Clark, N.A. Publication Date: 1995. A study of the risk of collision with power lines by Common Terns at Shotton Steel Works, North Wales. ISBN: 0-903793-72-5 34pp £2.50 Download Report (PDF)

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