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]

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

334. Raven, M.J., Noble, D.G. & Baillie, S.R. Publication Date: 2003. The Breeding Bird Survey 2002. Report number 7. ISBN: 1-902576-74-8 17pp Download Report
333. Gough,S., Gillings, S. & Vickery, J.A. Publication Date: 2003. The value and management of waste water treatment works for breeding and wintering birds in lowland eastern England. ISBN: 1-902576-72-1 48pp £5.00 Download Report (PDF)
332. Calladine, J. Publication Date: 2003. Baseline bird survey of Milton Glen, Stirling. ISBN: 1-902576-80-2 47pp £5.00 Download Report (PDF)
331. Banks, A.N., Burton, N.H.K., Musgrove, A.J. & Rehfisch, M.M. Publication Date: 2003. Lappel Bank and Fagbury Flats compensatory measures site suitability for waterbirds: Phase 1 extension. ISBN: 1-9048670-82-1 58pp £5.00 Download Report (PDF)
330. Banks, A.N., Coombes, R.H. & Crick, H.Q.P. Publication Date: 2003. Peregrine Falcon breeding population of the UK and Isle of Man in 2002. ISBN: 1-904870-57-0 42pp £5.00 Download Report (PDF)
329. Wilson, A. & Smart, M. Publication Date: 2003. Breeding wader populations in the Severn & Avon Vales Natural Area in 2002. ISBN: 1-902576-71-3 59pp £5.00 Download Report (PDF)
328. Hewson, C.M. & Fuller, R.J. Publication Date: 2003. Impacts of Grey Squirrels on woodland birds: an important predator of eggs and young?. ISBN: 1-902576-70-5 30pp £2.50 Download Report (PDF)
327. Calladine, J., Robertson, D. & Wernham, C. Publication Date: 2003. The movements of some granivorous passerines in winter on farmland: a pilot study. ISBN: 1-902576-69-1 58pp £5.00 Download Report (PDF)
326. Burton, N.H.K., Jones, T.E., Austin, G.E., Watt, G.A., Rehfisch, M.M. & Hutchings, C.J. Publication Date: 2004. Effects of reductions in organic and nutrient loading on bird populations in estuaries and coastal waters of England and Wales. Phase 2 Report June 2003. 150pp Download Report (PDF)
325. Austin, G.E., Armitage, M.J.S., Burton, N.H.K., Fuller, R.A., Holloway, S.J., Musgrove, A.J., Rehfisch, M.M. & Willis, S.G. Publication Date: 2003. 2002-03 Pilot Winter Gull Roost Survey (including preliminary details of 2003-04 full winter gull roost survey). ISBN: 1-902576-75-6 41pp £5.00 Download Report (PDF)
324. Joys, A.C., Clark, J.A., Clark, N.A. & Robinson, R.A. Publication Date: 2003. An investigation of the effectiveness of rehabilitation of birds as shown by ringing recoveries. ISBN: 1-904870-19-8 49pp £5.00 Download Report (PDF)
323. Marchant, J.H. & Wernham, C.V. Publication Date: 2003. Phenology of autumn passage of Willow Warblers at Dungeness: 1960-2000. ISBN: 1-902576-65-9 34pp £2.50 Download Report (PDF)
322. Marchant, J.H. & Noble, D.G. Publication Date: 2003. Waterways Breeding Bird Survey: progress report for 2001-2002. 42pp Download Report (PDF)
321. Newson, S.E. & Noble, D.G. Publication Date: 2003. Preliminary analysis of Breeding Bird Survey (BBS) mammal data. ISBN: 1-902576-64-0 64pp £5.00 Download Report (PDF)
320. Freeman, S.N., Noble, D.G., Newson, S.E. & Baillie, S.R. Publication Date: 2003. Importance of geographical location and local habitat features for species abundance: analyses using BBS data. ISBN: 1-904870-26-0 76pp £10.00 Download Report (PDF)
319. Holloway, S.J., Clark, N.A. & Burton, N.H.K. Publication Date: 2003. The numbers and status of waterbirds using Cardiff Bay from 1999/2000 - 2002/2003. ISBN: 1-902576-89-6 36pp £5.00 Download Report (PDF)
318. Newson, S.E. & Noble, D.G. Publication Date: 2003. Producing statistically valid maps of species abundance from UK Breeding Bird Survey counts using Geostatistical Analyst in ArcGIS. ISBN: 1-904870-25-2 44pp £10.00 Download Report (PDF)
317. Joys, A.C., Noble, D.G. & Baillie, S.R. Publication Date: 2003. Evaluation of species coverage and precision using the BBS indexing method. ISBN: 1-904870-24-4 70pp £5.00 Download Report (PDF)
316. Glue, D. & Carter, N. Publication Date: 2003. Lark Rise Farm, Barton, Cambs (Plot 1571). The Countryside Restoration Trust. Report on breeding birds 2002. ISBN: 1-902576-78-0 12pp £2.50 Download Report (PDF)
314. Burton, N.H.K., Holloway, S.J. & Clark, N.A. Publication Date: 2003. The effects on waterbirds on dredging at the Cardiff Bay Barrage. Report 2002/03. ISBN: 1-902576-84-5 30pp £2.50 Download Report (PDF)
313. Henderson, I., Ravenscroft, N., Clark, N. & Holloway, S. Publication Date: 2003. The Colworth Sustainable Project. The response of birds, invertebrates and plants to crop structure and management manipulations on arable farmland. 67pp £5.00 Download Report (PDF)
312. Henderson, I.G. Publication Date: 2003. Birds Eye Wall's: Partnership for Sustainability. Progress report on the use of pea fields by birds. ISBN: 1-902576-63-2 30pp £2.50 Download Report (PDF)
309. Burton, N.H.K., Holloway, S.J. & Clark, N.A. Publication Date: 2003. The effects on waterbirds of dredging at the Cardiff Bay Barrage. Report for April to December 2002. ISBN: 1-902576-85-3 29pp £2.50 Download Report (PDF)
308. Atkinson, P.W., Appleton, G.F., Clark, J.A., Clark, N.A., Gillings, S., Henderson, I.G., Robinson, R.A. & Stillman, R.A. Publication Date: 2003. Red Knots Calidris canutus in Delaware Bay 2002. Survival, foraging and marking strategy. ISBN: 1-902576-57-8 39pp £5.00 Download Report (PDF)
307. Robinson, R.A., Atkinson, P.W. & Clark, N.A. Publication Date: 2003. Arrival and weight gain of Red Knot Calidris canutus, Ruddy Turnstone Arenaria interpres and Sanderling Calidris alba staging in Delaware Bay in spring. ISBN: 1-902576-52-7 51pp £5.00 Download Report (PDF)
305. Joys, A.C. & Marchant, J.H. Publication Date: 2002. Update on waterbird population on the River Wharfe. ISBN: 1-904870-30-9 24pp £2.50 Download Report (PDF)
304. Holloway, S.J., Armitage, M.J.S. & Mellan, H.J. Publication Date: 2003. The role of birds as a potential source of bacterial contamination along the Blackpool shoreline - Year 2 (2002). ISBN: 978-1-906204-07-5 43pp £5.00 Download Report (PDF)
303. Freeman, S.N., Noble, D.G., Newson, S.E. & Baillie, S.R. Publication Date: 2002. Modelling bird population changes using data from the Common Birds Census and the Breeding Bird Survey. ISBN: 1-902576-66-7 44pp £5.00 Download Report (PDF)
302. Blackburn, J.R., Holloway, S.J. & Rehfisch, M.M. Publication Date: 2002. Assessing the effects of scaring Starlings roosting on Blackpool piers. ISBN: 1-902576-59-4 23pp £2.50 Download Report (PDF)
301. Burton, N.H.K. & Clark, N.A. Publication Date: 2002. The numbers and status of waterbirds using Cardiff Bay from 1999/2000 - 2001/2002. ISBN: 1-904870-20-1 34pp £2.50 Download Report (PDF)
300. Noble, D. & Newson, S. Publication Date: 2002. Pilot work to assess bird occurrence and abundance on BBS squares within ESAs. ISBN: 1-904870-28-7 54pp £5.00 Download Report (PDF)
298. Burton, N.H.K., Rehfisch, M.M. & Clark, N.A. Publication Date: 2002. The effect of the Cardiff Bay Barrage on waterbird populations 13. Disturbance and movement studies August 2001 - May 2002. ISBN: 1-904870-58-9 86pp £10.00 Download Report (PDF)
296. Armitage, M.J.S., Burton, N.H.K., Atkinson, P.W., Austin, G.E., Clark, N.A., Mellan, H.J. & Rehfisch, M.M. Publication Date: 2002. Reviewing the impact of agency permissions and activities on bird populations in SPAs Level 1 interpretation. + Appendices. ISBN: 1-902576-82-9 573pp £25.00 Download Report (PDF)
295. Raven, M.J., Noble, D.G. & Baillie, S.R. Publication Date: 2002. The Breeding Bird Survey 2001. Report no. 7. ISBN: 1-902576-53-5 16pp Download Report
294. Beaven, L.P., Leech, D.I., Shawyer, C.R., Balmer, D.E. & Crick, H.Q.P. Publication Date: 2002. The BTO Barn Owl Monitoring Programme: 2nd report: second year 2001. ISBN: 1-902576-55-1 60pp £5.00 Download Report (PDF)
293. Chamberlain, D.E., Freeman, S.N., Siriwardena, G.M., Vickery, J.A. & Bradbury, R.B. Publication Date: 2002. The potential value of the field scale evaluation in assessing the impact of GMHT crops on birds and mammals. ISBN: 978-1-906204-14-3 112pp £10.00 Download Report (PDF)
292. Marchant, J.H., Noble, D.G. & Beaven, L.P. Publication Date: 2002. Waterways Breeding Bird Survey: Progress Report for 2000-01. ISBN: 1-904870-59-7 34pp £2.50 Download Report (PDF)
291. Marchant, J.H., Noble, D.G., Leech, D.I. & Freeman, S.N. Publication Date: 2002. River Habitat Survey and Waterways Breeding Bird Survey 1998-2000 - Final Report.
290. Crick, H.Q.P., Robinson, R.A., Appleton, G.F., Clark, N.A. & Rickard, A.D. Publication Date: 2002. Investigation into the causes of the decline of Starlings and House Sparrows in Great Britain. Download Report (PDF)
289. Aebisher, N.J., Bradbury, R., Eaton, M., Henderson, I.G., Siriwardena, G.M. & Vickery, J.A. Publication Date: 2003. Predicting the response of farmland birds to agricultural change. ISBN: 1-902576-58-6 220pp £15.00 Download Report (PDF)
287. Atkinson, P.W., Austin, G.E. & Rehfisch, M.M. Publication Date: 2002. WeBS Alert III - methodological and presentational considerations. ISBN: 978-1-908581-06-8 40pp £5.00 Download Report (PDF)
286. Austin, G.E. Publication Date: 2002. Determining Greylag and Canada Goose habitat associations during the breeding season. ISBN: 1-902576-48-9 44pp £5.00 Download Report (PDF)
285. Burton, N.H.K. & Clark, N.A. Publication Date: 2002. The effects on waterbirds of dredging at the Cardiff Bay Barrage. Report for 2001/2002. ISBN: 1-904870-56-2 29pp £2.50 Download Report (PDF)
283. Armitage, M.J.S., Holloway, S.J., Shaw, P. & Rehfisch, M.M. Publication Date: 2002. Through-the-tidal-cycle and night-time waterbird counts as part of the London Gateway Assessment. ISBN: 1-902576-46-2 34pp £2.50 Download Report (PDF)
281. Leech, D.I., Rehfisch, M.M. & Atkinson, P.W. Publication Date: 2002. A guide to waterbird alerts. ISBN: 1-904870-68-6 31pp £2.50 Download Report (PDF)
280. Balmer, D.E., Holloway, S.J., Burton, N.H.K. & Clark, N.A. Publication Date: 2002. A study of the risk of collision with power lines by Common Terns and waterbirds at Shotton Steel Works, North Wales. ISBN: 1-902576-44-6 39pp £5.00 Download Report (PDF)
279. Holloway, S.J., Armitage, M.J.S., Austin, G.E., Mellan, H.J. & Rehfisch, M.M.R. Publication Date: 2002. The role of birds as a potential source of bacterial contamination along Blackpool shoreline. ISBN: 1-902576-51-9 82pp £10.00 Download Report (PDF)
277. Burton, N.H.K., Musgrove, A.J., Rehfisch, M.M. & Sutcliffe, A. Publication Date: 2002. Winter gull roosts in the United Kingdom in January 1993 with recommendations for future surveys of wintering gulls. ISBN: 1-902576-54-3 62pp £5.00 Download Report (PDF)
276. Burton, N.H.K. & Clark, N.A. Publication Date: 2001. The effects on waterbirds of dredging at the Cardiff Bay Barrage Interim Report December 2001. ISBN: 1-902576-39-X 25pp £2.50 Download Report (PDF)
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)