Filter Publications

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.

357. Marchant, J.H. & Coombes, R.H. Publication Date: 2004. WBBS Progress report 2002-03. 48pp Download Report (PDF)
356. Newson, S. Publication Date: 2004. Comparison of London wild bird population trends with those in the surrounding area: update 1994-2002. ISBN: 1-904870-84-8 21pp £2.50 Download Report (PDF)
355. Jackson, S.F. Publication Date: 2004. Monitoring methods for non-breeding Snipe. ISBN: 1-904870-71-6 18pp £2.50 Download Report (PDF)
354. Stilman, R.A., Clark, N.A., Atkinson, P.W., West, A.D., McGrorty, S., Le V dit Durell, S.E.A. & Yates, M.G. Publication Date: 2004. Assessing the impacts of shell-fishing and mussel farming on Oystercatcher populations in the Wash, England. Phase 1: Identification of model parameters to be refined. ISBN: 1-904870-38-4 23pp £2.50 Download Report (PDF)
352. Joys, A.C. & Crick, H.Q.P. Publication Date: 2004. Breeding periods for selected bird species in England. ISBN: 1-904870-07-4 46pp £5.00 Download Report (PDF)
351. Clark, N.A., Atkinson, P.W., Clark, J.A., Gillings, S. & Robinson, R. Publication Date: 2004. Report on the migration of Red Knots Calidris canutus rufa and Turnstone Arenaria interpres passing through Delaware Bay in 2003. ISBN: 978-1-908581-11-2 23pp £2.50 Download Report (PDF)
348. Wilson, A. & Crick, H. Publication Date: 2003. Peregrine Survey validation exercise 2003. ISBN: 1-904870-03-1 22pp £2.50 Download Report (PDF)
344. Clark, J.A., Clark, N.A., Robinson, R.A. & Atkinson, P.W. Publication Date: 2003. Using adult/juvenile ratios of waders in winter cannon net catches in Britain & Ireland to measure recruitment. ISBN: 1-904870-96-1 25pp £2.50 Download Report (PDF)
343. Burton, N.H.K., Rehfisch, M.M. & Clark, N.A. Publication Date: 2003. The effect of the Cardiff Bay Barrage on waterbird populations - final report. ISBN: 1-904870-05-8 114pp £10.00 Download Report (PDF)
342. Chamberlain, D.E., Vickery, J.A., Glue, D.E. & Conway, G. Publication Date: 2003. Gardens as a winter feeding refuge for declining farmland birds. ISBN: 1-902576-83-7 109pp £10.00 Download Report (PDF)
341. Leech, D.I., Marchant, J.H., Beaven, L.P. & Crick, H.Q.P Publication Date: 2003. The BTO Barn Owl Monitoring Programme: third year 2002. ISBN: 1-904870-06-6 54pp £5.00 Download Report (PDF)
340. Carter, N. & Glue, D. Publication Date: 2003. Westfield Farm, Cambs (Plot 1572). The Countryside Restoration Trust report on breeding birds 2002. ISBN: 1-902576-79-9 12pp £2.50 Download Report (PDF)
339. Boatman, N.D., Stoate, C., Henderson, I.G., Vickery, J.A., Thompson, P.G.L & Bence, S.L. Publication Date: 2003. Designing crop/plant mixtures to provide food for seed-eating farmland birds in winter. ISBN: 1-902576-77-2 43pp £5.00 Download Report (PDF)
338. Armitage, M.J.S, Austin, G.E., Ravenscroft, N.O.M. & Rehfisch, M.M. Publication Date: 2003. Towards determining the causes of declines in waterbird numbers on the Stour and Orwell estuaries SPA. ISBN: 1-904870-04-X 64pp £5.00 Download Report (PDF)
337. Newson, S.E., Noble, D.G. & Marchant, J.H. Publication Date: 2003. Analysis of population trends for waterways birds: a comparison of Waterways Bird Survey indices. ISBN: 1-904870-62-7 33pp £2.50 Download Report (PDF)
336. Musgrove, A., Newson, S., Fairney, N., Sanderson, B. & Whitehead, S. Publication Date: 2003. Marine Monitoring Project: ground and aerial monitoring protocols for in-shore Special Protection Areas: Common Scoter surveys in Carmarthen Bay during the winter of 2002-03. ISBN: 1-904870-61-9 61pp £5.00 Download Report (PDF)
335. Burton, N.H.K., Marchant, J.H., Musgrove, A.J., Armitage, M.J.S., Holloway, S.J. & Phillips, J. Publication Date: 2003. Low-tide distribution of waterbirds on the Severn estuary SPA: results of the 2002-03 WeBS Low Tide Counts and a historical analysis. ISBN: 1-902576-99-3 186pp £15.00 Download Report (PDF)
334. Raven, M.J., Noble, D.G. & Baillie, S.R. Publication Date: 2003. The Breeding Bird Survey 2002. 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)