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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.

275. Henderson, I.G., Vickery, J.A. & Carter, N. Publication Date: 2001. The relative abundance of birds on farmland in relation to game-cover and winter bird crops. ISBN: 1-902576-76-4 30pp £2.50 Download Report (PDF)
274. Atkinson, P.W., Henderson, I.G. & Clark, N.A. Publication Date: 2002. A preliminary analysis of the survival rates of Red Knots Calidris canutus rufa passing through the State of Delaware 1997-2001. ISBN: 1-904870-35-X 17pp £2.50 Download Report (PDF)
271. Armitage, M.J.S., Austin, G.E., Holloway, S.J. & Rehfisch, M.M. Publication Date: 2001. The Pilot Dispersed Waterbirds Survey. ISBN: 1-904870-63-5 35pp £5.00 Download Report (PDF)
270. Glue, D. & Carter, N. Publication Date: 2002. Lark Rise Farm, Barton, Cambs (Plot 1571) The Countryside Restoration Trust report on breeding birds. ISBN: 1-902576-49-7 19pp £2.50 Download Report (PDF)
269. Henderson, I.G., Clark, N.A. & Gough, S. Publication Date: 2001. A winter bird audit for Colworth Park 1999/2000, 2000/2001. ISBN: 978-1-908581-10-5 24pp £2.50 Download Report (PDF)
267. Burton, N.H.K., Paipai, E., Armitage, M.J.S., Maskell, J.M., Jones, E.T., Struve, J., Hutchings, C.J. & Rehfisch, M.M. Publication Date: 2002. Effects of reductions in organic and nutrient loading on bird populations in estuaries and coastal waters of England and Wales. Phase 1 Report March 2002. ISBN: 1-902576-45-4 87pp £10.00 Download Report (PDF), Download Report (PDF)
266. Burton, N.H.K., Rehfisch, M.M. & Clark, N.A. Publication Date: 2001. The effect of the Cardiff Bay Barrage on waterbird populations 12. Distribution and movement studies August 2000 - May 2001. ISBN: 1-902576-41-1 90pp £10.00 Download Report (PDF)
263. Wilson, A.M. & Fuller, R.J. Publication Date: 2002. Bird populations and environmental change. CS2000 Module 5. ISBN: 1-902576-40-3 116pp £10.00 Download Report (PDF)
262. Armitage, M.J.S., Austin, G.E. & Rehfisch, M.M. Publication Date: 2001. Cormorants along the River Wensum: an analysis of habitat associations. ISBN: 1-902576-38-1 39pp £5.00 Download Report (PDF)
261. Atkinson, P.W., Rehfisch, M.M. & Pollitt, M. Publication Date: 2001. WeBS Alerts 1999/2000: changes in numbers of wintering waterbirds in the United Kingdom at national, country and SSSI scales. ISBN: 978-1-908581-02-0 60pp £5.00 Download Report (PDF)
260. Chamberlain, D.E., Freeman, S.N., Siriwardena, G.M. & Vickery, J.A. Publication Date: 2001. The effects of GM crops on summer bird and mammal occurrence - a power analysis. ISBN: 978-1-906204-17-14 43pp £5.00 Download Report (PDF)
259. Holloway, S.J. & Clark, N.A. Publication Date: 2001. Lancaster bypass winter 2000/2001. ISBN: 1-094870-37-6 60pp £5.00 Download Report (PDF)
258. Crick, H.Q.P., Shawyer, C.R., Siriwardena, G.M., Balmer, D.E. & Toms, M.P. Publication Date: 2001. The BTO Barn Owl Monitoring Programme: 1st Report: Pilot Year 2000. ISBN: 1-902576-28-4 45pp £15.00 Download Report (PDF)
257. Siriwardena, G.M., Greenwood, J.J.D. & Clark, N.A. Publication Date: 2001. Bird indicators of sustainability for the water industry. ISBN: 1-902576-33-0 79pp £10.00 Download Report (PDF)
256. Armitage, M.J.S., Holloway, S.J., Rehfisch, M.M., Griffin, B. & Raven, M. Publication Date: 2001. Monitoring the use made of Chara intermedia beds by waterbirds on Hickling Broad during the 2000/01 winter. ISBN: 1-904870-70-8 71pp £5.00 Download Report (PDF)
255. Burton, N.H.K., Maskell, J.M., Armitage, M.J.S., Hutchings, C.J. & Rehfisch, M.M. Publication Date: 2001. Effects of reductions in organic and nutrient loading on bird populations in estuaries and coastal waters of England and Wales. Interim Report March 2001. ISBN: 1-902576-62-4 37pp £5.00 Download Report (PDF)
254. Burton, N.H.K, Armitage, M.J.S., Raven, M.J., Rehfisch, M.M. & Clark, N.A. Publication Date: 2002. The effect of the Cardiff Bay Barrage on waterbird populations 11. Distribution and movement studies August 1999 - May 2000. ISBN: 1-902576-42-X 90pp £10.00 Download Report (PDF)
253. Henderson, I.G. Publication Date: 2001. Birds Eye Walls: Partnership for Sustainability. Progress report on the use of pea fields by birds. ISBN: 1-902576-67-5 64pp £5.00 Download Report (PDF)
251. Freeman, S.N., Baillie, S.R. & Gregory, R.D. Publication Date: 2001. Statistical analyses of an indicator of population trends in farmland birds. ISBN: 1-902576-31-4 28pp £2.50 Download Report (PDF)
250. Balmer, D.E., Adams, S.Y. & Crick, H.Q.P. Publication Date: 2000. Report on Barn Owl Release Scheme Monitoring Project Phase ll. ISBN: 1-904870-67-8 24pp £2.50 Download Report (PDF)
249. Henderson, I., Holloway, S. & Clark, N. Publication Date: 2000. Birds and sustainable agriculture at Colworth Park: a progress report for winter 1999/2000 and summer 2000. ISBN: 978-1-908581-09-9 42pp £5.00 Download Report (PDF)
248. Musgrove, A.J., Clark, N.A., Gill, J. & Ravenscroft, N.O.M. Publication Date: 2001. A review of wildfowling on the Stour estuary. ISBN: 1-902576-30-6 90pp £10.00 Download Report (PDF)
245. Vanhinsbergh, D., Fuller, R.J. & Noble, D. Publication Date: 2003. A review of possible causes of recent changes in populations of woodland birds in Britain. ISBN: 1-902576-98-5 92pp £10.00 Download Report (PDF)
244. Robinson, R.A. & Noble, D.G. Publication Date: 2000. Regional indicators of wild bird populations: an exploratory study. ISBN: 1-902576-26-8 46pp £5.00 Download Report (PDF)
243. Burton, N.H.K. & Clark, N.A. Publication Date: 2000. The ecological effect of the proposed Mansbrook Grove Outfall with particular reference to birds on the adjacent mudflats of the Orwell Estuary. ISBN: 978-1-906204-55-6 39pp £5.00 Download Report (PDF)
242. Armitage, M.J.S., Holloway, S.J. & Rehfisch, M.M. Publication Date: 2000. Monitoring the use made of Chara intermediae beds by waterfowl on Hickling Broad during the 1999/2000 winter. ISBN: 1-904870-69-4 52pp £5.00 Download Report (PDF)
241. Marchant, J.H. & Noble, D.G. Publication Date: 2000. Waterways Breeding Bird Survey: Progress Report for 1998-99. ISBN: 1-904870-86-4 58pp £5.00 Download Report (PDF)
239. Atkinson, P.W., Austin, G.E., Burton, N.H.K., Musgrove, A.J., Pollitt, M. & Rehfisch, M.M. Publication Date: 2000. WeBS Alerts 1998/99: changes in numbers of wintering waterbirds in the UK at national, country and Special Protection Area (SPA) scales. ISBN: 1-902576-47-0 143pp £10.00 Download Report (PDF)
238. Atkinson, P.W., Clark, N.A., Clark, J.A., Bell, M.C., Dare, P.J. & Ireland, P.L. Publication Date: 2000. The effects of changes in shellfish stocks and winter weather on shorebird populations: results of a 30-year study on the Wash, England. ISBN: 1-902576-25-X 54pp £5.00 Download Report (PDF)
237. Henderson, I.G. Publication Date: 2000. Birds Eye Walls: Partnership for Sustainability. Progress report on the use of pea fields by birds. ISBN: 1-902576-68-3 56pp £5.00 Download Report (PDF)
236. Chamberlain, D.E., Warren, R.W., Crick, H.Q.P., Hall, J., Metcalfe, S., Ormerod, S., Whyatt, D. & Vickery, J.A. Publication Date: 2000. Acidification and terrestrial birds. ISBN: 1-902576-27-6 150pp £35.00 Download Report (PDF)
235. Clark, N.A. Publication Date: 1999. Progress report on the effectiveness of the Mark ll CatAlert collar at reducing predation by domestic cats. ISBN: 1-902576-23-3 10pp £2.50 Download Report (PDF)
234. Henderson , I.G., Wilson, A.M. & Steele, D. Publication Date: 1999. Population estimates & habitat associations of breeding waders in Northern Ireland, 1999: the results of an extensive survey. ISBN: 1-902576-21-7 40pp £5.00 Download Report (PDF)
233. Burton, N.H.K., Rehfisch, M.M. & Clark, N.A. Publication Date: 2000. The effect of the Cardiff Bay Barrage on Waterfowl Populations 10. Distribution and movement studies August 1998 - May 1999. ISBN: 1-902576-88-8 69pp £5.00 Download Report (PDF)
231. Henderson, I.G. Publication Date: 1999. A large scale survey of the use of winter crops by foraging birds on farmland. ISBN: 1-904870-33-3 34pp £2.50 Download Report (PDF)
230. Burton, N.H.K & Fuller, R.J. Publication Date: 1999. A review of the status and population trends of ground-nesting birds vulnerable to Mink predation on Harris and Lewis. ISBN: 1-902576-61-6 53pp £5.00 Download Report (PDF)
229. Blair, M.J., McKay, H., Musgrove, A.J. & Rehfisch, M.M. Publication Date: 2000. Review of the status of introduced non-native waterbird species in the agreement area of the African-Eurasian Waterbird Agreement Research Contract CR0219. ISBN: 1-902576-60-8 130pp £10.00 Download Report (PDF)
228. Evans, K. Publication Date: 1997. Site Action Plan for Black Redstarts Phoenicurus ochruros in the Deptford Creek Area. ISBN: 1-902576-22-5 8pp £2.50 Download Report (PDF)
227. Armitage, M.J.S., Rehfisch, M.M. & Burton, N.H.K. Publication Date: 2001. Impact of the Sea Empress Oil Spill on the abundance and distribution of waterbirds within Milford Haven. Year 3 Final Report, July 1999. ISBN: 1-902576-35-7 84pp £10.00 Download Report (PDF)
226. Baillie, S.R. & Rehfisch, M.M. (eds) Publication Date: 1999. National and site-based alert systems for UK birds. ISBN: 1-904870-78-3 150pp £10.00 Download Report (PDF)
225. Noble, D.G., Bashford, R.I., Marchant, J.H., Baillie, S.R. & Gregory, R.D. Publication Date: 1999. The Breeding Bird Survey. Report Number 4. ISBN: 1-902576-16-0 16pp Download Report
224. Gillings, S & Fuller, R.J. Publication Date: 1999. Winter ecology of Golden Plovers and Lapwings: a review and consideration of extensive survey methods. ISBN: 1-902576-18-7 56pp £5.00 Download Report (PDF)
223. Toms, M.P., Siriwardena, G.M. & Greenwood, J.J.D. (Part lll.A.1 written by Freeman, S.N. & Siriwardena, G.M.) Publication Date: 1999. Developing a mammal monitoring programme for the UK. ISBN: 1-902576-19-5 313pp £20.00 Download Report (PDF)
222. Vickery, J.A., Tallowin, J.T., Feber, R.E., Atkinson, P.W., Asteraki, E.J., Fuller, R.J. & Brown, V.K. Publication Date: 1999. Changes in lowland grassland management: implications for invertebrates & birds. ISBN: 1-902576-14-4 106pp £10.00 Download Report (PDF)
221. Gregory, R.D., Gibbons, D.W., Impey, A. & Marchant, J.H. Publication Date: 1999. Generation of the headline indicator of wildbird populations. ISBN: 1-902576-20-9 36pp Download Report (PDF)
220. Balmer, D.E. & Rehfisch, M.M. Publication Date: 1999. An assessment of the feeding requirements of overwintering waterfowl at Hickling Broad. ISBN: 1-904870-66-X 47pp £5.00 Download Report (PDF)
219. Henderson, I.G. Publication Date: 1999. Birds Eye Walls: Partnership for Sustainability. A resume of the usage of winter stubbles by birds on arable farmland in the UK. ISBN: 1-902576-17-9 13pp £2.50 Download Report (PDF)
218. Marchant, J.H. & Gregory, R.D. Publication Date: 1999. Waterways Breeding Bird Survey plot study 1998: adaption of census methods to rivers and canals.
217. Field, R.H. & Gregory, R.D. Publication Date: 1999. Measuring population changes from the Breeding Bird Survey. ISBN: 1-902576-09-8 62pp £5.00 Download Report (PDF)
215. Balmer, D.E. & Holloway, S.J. Publication Date: 1998. A study of the risk of collision with power lines by waterbirds at Shotton Steel Works North Wales. ISBN: 1-904870-65-1 34pp £2.50 Download Report (PDF)

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