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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.

433. Newson, S.E., Ekins, G.R., Marchant, J.H., Rehfisch, M.M. & Sellers, R.M. Publication Date: 2006. The status of inland and coastal breeding Great Cormorants Phalacrocorax carbo in England. ISBN: 1-904870-72-4 36pp £5.00 Download Report (PDF)
432. Maclean, I.M.D., Burton, N.H.K. & Austin, G.E. Publication Date: 2006. Declines in over-wintering diving ducks at Lough Neagh and Lough Beg: comparisons of within site, regional, national and European trends. ISBN: 978-1-906204-06-8 69pp £5.00 Download Report (PDF)
431. Collier, M.P., Burton, N.H.K. & Baylis, S. Publication Date: 2006. A survey and assessment of the birds of the Cam Washes and Berry Fen SSSIs Cambridgeshire, focussing on breeding and wintering waterbirds. ISBN: 1-904870-81-3 37pp £5.00 Download Report (PDF)
430. Carter, N. Publication Date: 2006. Westfield Farm, Cambridgeshire (Plot 1572). The Countryside Restoration Trust report on breeding birds 2004. ISBN: 1-904870-80-5 15pp £2.50 Download Report (PDF)
429. Conway, G.J., Crick, H.Q.P., Fuller, R.J., Handschuh, M., Maclean, I.M.D., Marchant, J.H., Musgrove, A.J., Newson, S.E., Noble, D.G., Rehfisch, M.M. & Thewlis, R.M. Publication Date: 2006. Coverage of designated sites in England by BTO bird monitoring schemes: a review to 2005. ISBN: 978-1-906204-16-7 156pp £15.00 Download Report (PDF)
428. Newson, S.E. & Noble, D.G. Publication Date: 2006. The production of population trends for UK mammals using BBS Mammal Data: 1995-2004 update. ISBN: 1-904870-54-6 67pp £5.00 Download Report (PDF)
426. Atkinson, P.W., Baker, A.J., Bevan, R.M., Clark, N.A., Cole, K.B.,Gonzalez, P.M., Newton, J., & Robinson, R.A. Publication Date: 2005. Unravelling the migration and moult strategies of a long-distance migrant using stable isotopes: Red Knot Calidris canutus movements in the Americas.
424. Leech, D.I., Crick, H.Q.P. & Shawyer, C.R. Publication Date: 2005. The BTO Barn Owl Monitoring Programme: fifth year 2004. ISBN: 1-904870-52-X 64pp £5.00 Download Report (PDF)
423. Calladine, J. Publication Date: 2005. A pilot study to test the efficacy of field methods for wide scale monitoring of Ptarmigan in Scotland. ISBN: 1-904870-51-1 28pp £2.50 Download Report (PDF)
422. Conway, G. & Henderson, I. Publication Date: 2005. A continuation survey of Nightjars Caprimulgus europeaus on SSSIs in East Anglia 2005. ISBN: 978-1-906207-03-7 18pp £2.50 Download Report (PDF)
420. Pendlebury, C., Wernham, C. & Rehfisch, M. Publication Date: 2006. Analysis of Islay Greenland White-fronted Anser albifrons flavirostris and Barnacle Branta leucopsis Goose datasets. ISBN: 978-1-908581-40-2 120pp £10.00 Download Report (PDF)
419. Banks, A.N., Burton, N.H.K., Austin, G.E., Carter, N., Chamberlain, D.E., Holt, C., Rehfisch, M.M., Wakefield, E. & Gill, P. Publication Date: 2005. The potential effects on birds of the Greater Gabbard offshore windfarm. Report for February 2004 - March 2005. ISBN: 978-1-906204-04-4 195pp £15.00 Download Report (PDF)
417. Burton, N.H.K. & Goddard, A.P. Publication Date: 2005. Impacts of changes in sewage disposal on populations of waterbirds wintering on the Northumbrian coast. Report for 2004/05. ISBN: 978-1-906204-53-2 40pp £5.00 Download Report (PDF)
414. Robinson, R.A., Learmonth, J.A., Hutson, A.M., Macleod, C.D., Sparks, T.H., Leech, D.I., Pierce, G.J., Rehfisch, M.M. & Crick, H.Q.P. Publication Date: 2005. Climate change and migratory species. 308pp Download Report (PDF)
411. Leech, D.I., Crick, H.Q.P. & Shawyer, C.R. Publication Date: 2005. The BTO Barn Owl Monitoring Programme: fourth year 2003. ISBN: 1-904870-46-5 50pp £5.00 Download Report (PDF)
410. Noble, D.G., Carter, P., Harris, S., Leech, D., Poulton, S. & Shearer, G. Publication Date: 2005. Winter mammal monitoring - a pilot study. ISBN: 1-904870-45-7 163pp £15.00 Download Report (PDF)
409. Champion, G., Dewar, A., Gough, S., Haylock, L., Henderson, I. & May, M. Publication Date: 2005. The value of the sugar beet crop for birds and the farm environment. Report A - uncropped headlands. ISBN: 978-1-906204-23-5 56pp £5.00 Download Report (PDF)
408. Leech, D.I., Banks, A. & Crick, H.Q.P. Publication Date: 2005. The influence of the 2001 Foot and Mouth disease outbreak on Barn Owl productivity in the UK. ISBN: 1-904870-44-9 28pp £2.50 Download Report (PDF)
406. Baylis, S.M., Austin, G.E., Hughes, G.J., Musgrove, A.J. & Rehfisch, M.M. Publication Date: 2005. Estimating Great Cormorant Phalacrocorax carbo population changes as an aid to management. ISBN: 1-904870-49-x 45pp £5.00 Download Report (PDF)
405. Newson, S.E. & Noble, D.G. Publication Date: 2005. Waterways Breeding Bird Survey: preliminary analyses of mammal data 1998-2003. ISBN: 1-904870-41-4 62pp £5.00 Download Report (PDF)
404. Newson, S.E. & Noble, D.G. Publication Date: 2005. The production of population trends for UK mammals using BBS mammal data: 1995-2003 update. ISBN: 1-904870-40-6 53pp £5.00 Download Report (PDF)
402. Vickery, J.A., Atkinson, P.W., Marshall, J.H., West, T., Norris, K., Robinson, L.J., Gillings, S., Wilson, A. & Kirby, W. Publication Date: 2005. The effects of different crop stubbles and straw disposal methods on wintering birds and arable plants. ISBN: 1-904870-48-1 84pp £10.00 Download Report (PDF)
401. Chamberlain, D., Freeman, S., Rehfisch, M., Fox, T. & Desholm, M. Publication Date: 2005. Appraisal of Scottish Natural Heritage's Windfarm collision risk model and its applications. ISBN: 1-904870-53-8 52pp £5.00 Download Report (PDF)
400. Banks, A.N., Austin, G.E., Burton, N.H.K. & Mellan, H.J. Publication Date: 2005. Investigating possible movements of waterbirds between the Medway Estuary & Marshes SPA and neighbouring areas of the Thames and Swale Estuaries. ISBN: 1-904870-43-0 162pp £15.00 Download Report (PDF), Download Report (PDF)
399. Burton, N.H.K., Baylis, S. & Holloway, S.J. Publication Date: 2005. The effects on waterbirds of dredging at the Cardiff Bay Barrage. Report for 2004/05. ISBN: 978-1-906204-01-3 28pp £2.50 Download Report (PDF)
398. Conway, G. & Henderson, I. Publication Date: 2005. The status and distribution of the European Nightjar Caprimulgus europaeus in Britain in 2004. ISBN: 978-1-906204-43-3 28pp £2.50 Download Report (PDF)
394. Calladine, J., Crick, H. & Wernham, C. Publication Date: 2005. Development of methods for surveying and estimating population size of Short-eared Owls. ISBN: 978-1-906204-41-9 29pp £2.50 Download Report (PDF)
393. Atkinson, P.W., Clark, N.A., Dodd, S.G. & Moss, D. Publication Date: 2005. Changes in survival and recruitment of Oystercatchers Haemotopus ostralegus at Traeth Lafan North Wales in relation to shellfish exploitation. ISBN: 1-904870-36-8 40pp £5.00 Download Report (PDF)
388. Banks, A.N. & Rehfisch, M.M. Publication Date: 2005. Overwintering waterbirds and waterskiing at Dosthill Lake. ISBN: 1-904870-39-2 47pp £5.00 Download Report (PDF)
386. Glue, D. & Carter, N. Publication Date: 2005. Lark Rise Farm, Barton, Cambs (Plot 1571). The Countryside Restoration Trust Report on Breeding Birds 2003. ISBN: 1-904870-16-3 18pp £2.50 Download Report (PDF)
384. Chamberlain, D., Gough, S., Vaughan, H., Appleton, G., Freeman, S., Toms, M., Vickery, J. & Noble, D. Publication Date: 2004. The London Bird Project. ISBN: 1-904870-18-X 190pp £15.00 Download Report (PDF)
382. Carter, N. & Glue, D. Publication Date: 2004. Westfield Farm, Cambs (Plot 1572). Report on Breeding Birds 2003. ISBN: 1-904870-14-7 15pp £2.50 Download Report (PDF)
380. Burton, N.H.K., Banks, A.N., Calladine, J.R., Austin, G.E., Armitage, M.J. & Holloway, S.J. Publication Date: 2005. Indexing winter gull populations in England, Wales, Scotland and Northern Ireland: an analysis of data from the 1953 to 2004 Winter Gull Roost Surveys. ISBN: 978-1-906204-37-2 41pp £5.00 Download Report (PDF)
379. Banks, A.N., Noble, D.G. & Rehfisch, M.M. Publication Date: 2005. Thames Water overwintering and breeding bird indicators: feasibility study. ISBN: 978-1-906204-12-9 30pp £2.50 Download Report (PDF)
377. Noble, D.G., Newson, S.E. & Joys, A.C. Publication Date: 2004. Investigation of methods for producing joint CBC-BBS trends. ISBN: 1-904870-27-9 70pp £5.00 Download Report (PDF)
376. Newson, S.E., Crowe, O. & Noble, D.G. Publication Date: 2004. Scoping study on integrating Countryside Bird Survey and breeding Bird Survey data to generate All-Ireland trends. ISBN: 1-904870-47-3 34pp £2.50 Download Report (PDF)
375. Chamberlain, D., Calladine, J. & Harding, N. Publication Date: 2004. Ornithological survey of a proposed windfarm site at Hill of Nigg. ISBN: 978-1-906204-13-6 37pp £5.00 Download Report (PDF)
373. Calladine, J., Wernham, C. & Robertson, D. Publication Date: 2004. The ranging behaviour of some granivorous passerines in winter on farmland: Report for the second season Winter 2003/04. ISBN: 1-904870-13-9 47pp £5.00 Download Report (PDF)
371. Burton, N.H.K., Goddard, A.P. & Grant, A. Publication Date: 2004. Impacts of changes in sewage disposal on populations of waterbirds wintering on the Northumbrian coast. Report for 2003/04. ISBN: 978-1-906204-67-9 62pp £5.00 Download Report (PDF)
369. Leech, D.I., Crick, H.Q.P. & Rehfisch, M.M. Publication Date: 2004. The effect of climate change on bird species in the UK. ISBN: 1-904870-85-6 48pp £5.00 Download Report (PDF)
368. Newson, S.E., Noble, D.G. & Eaton, M.A. Publication Date: 2004. Preliminary BBS-based habitat specific indicators for wild bird populations 1994-2002. ISBN: 1-904870-83-X 42pp £5.00 Download Report (PDF)
367. Newson, S. & Noble, D. Publication Date: 2005. Analyses of Breeding Bird Survey mammal data 1995-2002. ISBN: 1-901870-12-0 48pp £5.00 Download Report (PDF)
366. Banks, A., Bolt, D., Bullock, I., Haycock, B., Musgrove, A., Newson, S., Fairney, N., Sanderson, B., Schofield, R., Smith, L., Raylor, R. & Whitehead, S. Publication Date: 2004. Marine monitoring project: ground and aerial monitoring protocols for inshore Special Protection Areas: extension. Common Scoter surveys in Carmarthen Bay during the winters of 2002-03 and 2003-04. Download Report (PDF)
365. Wilson, A., Pendlebury, C. & Vickery, J. Publication Date: 2005. Changes in lowland wet grassland breeding wader numbers: the influence of site designation. ISBN: 1-904870-17-1 54pp £5.00 Download Report (PDF)
362. Moss, D., Joys, A.C., Clark, J.A., Kirby, A., Smith, A., Baines, D. & Crick, H.Q.P. Publication Date: 2005. Timing of breeding of moorland birds. ISBN: 1-904870-31-7 116pp £10.00 Download Report (PDF)
361. Banks, A.N., Austin, G.E. & Rehfisch, M.M. Publication Date: 2004. Southwest London waterbodies SPA wildfowl population analysis. ISBN: 1-904870-09-0 74pp £5.00 Download Report (PDF)
360. Holloway, S.J., Grantham, M.J., Collier, M.P. & Burton, N.H.K. Publication Date: 2004. The effects on waterbirds of dredging at the Cardiff Bay Barrage. Report for 2003/04. ISBN: 1-904870-32-5 28pp £2.50 Download Report (PDF)
359. Banks, A.N. & Austin, G.E. Publication Date: 2004. Statistical comparisons of waterbird site trends with regional and national trends for incorporation within the WeBS Alerts system. ISBN: 1-904870-15-5 31pp £2.50 Download Report (PDF)
358. Henderson, I., Clark, N., Bodey, T., Holloway, S.J. & Armitage, M. Publication Date: 2004. The use of pea crops by farmland birds: evidence for an extended breeding and enhanced feeding opportunities in crop mosaics. ISBN: 1-904870-34-1 30pp £2.50 Download Report (PDF)