Clicking on reference links within the text of this report will bring you to its full details in this section: the reference sought will be at the very top of your view.

In some cases, we provide an onward link either to an abstract or, where it is freely available, to the full text of the listed publication. Alternatively, your own web search will often take you to the summary of an article and the opportunity to purchase the text in full. The doi (digital object identifier), where given, is a permanent link to wherever an article can be found online.

Most of the listed publications are available in printed form to BTO members and other bona fide researchers through the Chris Mead Library at BTO headquarters in Thetford. Further information on how to access freely available ornithological publications online is here on the BTO web site.

Aebischer, N.J. (1995) Investigating the effects of hunting on the survival of British pigeons and doves by analysis of ringing recoveries. Journal of Applied Statistics 22: 923–934.

Aebischer, N.J. (1999) Multi-way comparisons and generalised linear models of nest success: extensions of the Mayfield method. Bird Study 46: S22–S31.

Aebischer, N.J. (2019) Fifty-year trends in UK hunting bags of birds and mammals, and clibrated estimation of national bag size, using GWCT's National Gamebag Census. European Journal of Wildlife Research 65: 64.

Aebischer, N.J. & Ewald, J.A. (2004) Managing the UK Grey Partridge Perdix perdix recovery: population change, reproduction, habitat and shooting. Ibis 146 (S2): 181–191.

Aebischer, N.J. & Ewald, J. (2010) Grey Partridge Perdix perdix in the UK: recovery status, set-aside and shooting. Ibis 152: 530–542.

Aebischer, N.J. & Potts, G.R. (1998) Spatial changes in Grey Partridge (Perdix perdix) distribution in relation to 25 years of changing agriculture in Sussex, UK. Gibier Faune Sauvage 15: 293–308.

Aebischer, N.J., Evans, A.D., Grice, P.V. & Vickery, J.A. (2000) The Ecology and Conservation of Lowland Farmland Birds. British Ornithologists' Union, Tring.

Ahola, M.P., Laaksonen, T., Eeva, T. & Lehikoinen, E. (2009) Great Tits lay increasingly smaller clutches than selected for: a study of climate- and density-related changes in reproductive traits. Journal of Animal Ecology 78: 1298–1306.

Allen, D.S. (1995) Habitat selection by Whinchats: a case for bracken in the uplands. In Heaths and Moorland: Cultural Landscapes (eds Thompson, D.B.A., Hester, A.J. & Usher, M.B.), pp 200–205. HMSO, Edinburgh.

Altewischer, A., Buschewski, U., Ehrke, C., Fröhlich, J., Gärtner, A., Giese, P., Günter, F., Heitmann, N., Hestermann, M., Hoffmann, H., Kleinschmidt, F., Kniepkamp, B., Linke, W., Mayland-Quellhorst, T., Pape, J., Peterson, T., Schendel, V., Schwieger, S., Wadenstorfer, A. & Fischer, K. (2015) Habitat preferences of male Corn Buntings Emberiza calandra in North-Eastern Germany. Acta Ornithologica 50 (1): 1–10. doi: 10.3161/00016454AO2015.50.1.001

Altwegg, R., Roulin, A., Kestenholz, M. & Jenni, L. (2006) Demographic effects of extreme winter weather in the barn owl. Oecologia 149, 44–51.

Amar, A. (2014) Hen Harriers: going, going. British Ornithologists' Union. Full text [accessed 17 Dec 2014]

Amar, A. & Redpath, S. (2002) Determining the cause of the Hen Harrier decline on the Orkney Islands: an experimental test of two hypotheses. Animal Conservation 5: 21–28.

Amar, A. & Redpath, S.M. (2005) Habitat use by Hen Harriers Circus cyaneus on Orkney: implications of land-use change for this declining population. Ibis 147: 37–47.

Amar, A., Arroyo, B. & Redpath, S. (2002) Analysis of breeding success of Orkney Hen Harriers in relation to habitat. Unpublished contract report to SNH: BAT/PA02e/01/02/100.

Amar, A., Redpath, S. & Thirgood, S. (2003) Evidence for food limitation in the declining hen harrier population on the Orkney Islands, Scotland. Biological Conservation 111: 377–384.

Amar, A., Picozzi, N., Meek, E.R., Redpath, S.M. & Lambin, X. (2005) Decline of the Orkney Hen Harrier Circus cyaneus population: do changes to demographic parameters and mating system fit a declining food hypothesis? Bird Study 52: 18–24.

Amar, A., Hewson, C.M., Thewlis, R.M., Smith, K.W., Fuller, R.J., Lindsell, J.A., Conway, G., Butler, S. & MacDonald, M.A. (2006) What's Happening to Our Woodland Birds? Long-term changes in the populations of woodland birds. BTO Research Report 169 & RSPB Research Report 19. BTO, Thetford and RSPB, Sandy. Full text

Amar, A., Arroyo, B., Meek, E., Redpath, S. & Riley, H. (2008a) Influence of habitat on breeding performance of Hen Harriers Circus cyaneus in Orkney. Ibis 150: 400–404.

Amar, A., Thirgood, S., Pearce-Higgins, J. & Redpath, S. (2008b) The impact of raptors on the abundance of upland passerines and waders. Oikos 117: 1143–1152.

Amar, A., Smith, K.W., Butler, S., Lindsell, J.A., Hewson, C.M., Fuller, R.J. & Charman, E.C. (2010a) Recent patterns of change in vegetation structure and tree composition of British broadleaved woodland: evidence from large-scale surveys. Forestry 83: 345–356.

Amar, A., Redpath, S., Sim, I. & Buchanan, G. (2010b) Spatial and temporal associations between recovering populations of common raven Corvus corax and British upland wader populations. Journal of Applied Ecology 47: 253–262.

Amar, A., Grant, M., Buchanan, G., Sim, I., Wilson, J., Pearce-Higgins, J.W. & Redpath, S. (2011) Exploring the relationships between wader declines and current land-use in the British uplands. Bird Study 58: 13–26.

Amar, A., Court, I.R., Davison, M., Downing, S., Grimshaw, T., Pickford, T. & Raw, D. (2012) Linking nest histories, remotely sensed land use data and wildlife crime records to explore the impact of grouse moor management on peregrine falcon populations. Biological Conservation 145: 86–94. doi:10.1016/j.biocon.2011.10.014

Andrén, H. (1992) Corvid density and nest predation in relation to forest fragmentation: a landscape perspective. Ecology 73: 794–804.

Andries, A.M., Gulinck, H. & Herremans, M. (1994) Spatial modelling of the barn owl habitat using landscape characteristics from SPOT data. Ecography 17: 278–287.

Anganuzzi, A.A. (1993) A comparison of tests for detecting trends in abundance indices of dolphins. Fishery Bulletin 91: 183–194.

Angelstam, P., Breuss, M., Mikusinski, G., Stenström, M., Stighäll, K. & Thorell, D. (2002) Effects of forest structure on the presence of woodpeckers with different specialisation in a landscape history gradient in NE Poland. Avian Landscape Ecology: pure and applied issues in the large-scale ecology of birds: Proceedings of the 11th annual IALE(UK) conference, 10–13 September 2002 (eds Chamberlain, D. & Wilson, A.), 25–38. University of East Anglia.

Archaux, F. (2007) Are mountains refuges for farmland bird species? A case study in the northern French Alps. Bird Study 54: 73–79.

Aschwanden, J., Holzgang, O. & Jenni, L. (2007) Importance of ecological compensation areas for small mammals in intensively farmed areas. Wildlife Biology 13: 150–158.

Askew, N.P. (2006) Barn Owl Tyto alba conservation in Britain – identifying priority conservation areas. PhD thesis, University of York.

Askew, N.P., Searle, J.B. & Moore, N.P. (2007) Agri-environment schemes and foraging of barn owls Tyto alba . Agriculture, Ecosystems & Environment 118: 109–114.

Atkinson, P.W., Buckingham, D. & Morris, T. (2004) What factors determine where invertebrate-feeding birds forage in dry grasslands? Ibis 146 (suppl. 2): 99–107.

Auer, S.K. & Martin, T.E. (2013) Climate change has indirect effects on resource use and overlap among coexisting bird species with negative consequences for their reproductive success. Global Change Biology 19: 411–419. doi: 10.1111/gcb.12062

Ausden, M. & Hirons, G.J.M. (2002) Grassland nature reserves for breeding wading birds in England and the implications for the ESA agri-environment scheme. Biological Conservation 106: 279–291.

Ausden, M., Sutherland, W.J. & James, R. (2001) The effects of flooding lowland wet grassland on soil macroinvertebrate prey of breeding wading birds. Journal of Applied Ecology 38: 320–338.

Austin, G.E. & Houston, D.C. (1997) The breeding performance of the Buzzard Buteo buteo in Argyll, Scotland and a comparison with other areas in Britain. Bird Study 44: 146–154.

Austin, G.E, Rehfisch, M.M., Allan, J.R. & Holloway, S.J. (2007) Population size and differential population growth of introduced Greater Canada Geese Branta canadensis and re-established Greylag Geese Anser anser across habitats in Great Britain in the year 2000. Bird Study 54: 343–352. Abstract

Austin, G.E., Collier, M.P., Calbrade, N.A., Hall, C. & Musgrove, A.J. (2008) Waterbirds in the UK 2006/07: The Wetland Bird Survey. BTO/WWT/RSPB/JNCC, Thetford. Full text

Baillie, S.R. (1990) Integrated population monitoring of breeding birds in Britain and Ireland. Ibis 132: 151–166.

Baillie, S.R. (1991) Monitoring terrestrial breeding bird populations. In Goldsmith, F.B. (ed.) Monitoring for Conservation and Ecology: 112–132. Chapman & Hall, London.

Baillie, S.R. & Peach, W.J. (1992) Population limitation in Palaearctic–African migrant passerines. Ibis 134 Suppl. 1: 120–132.

Baillie, S.R., Crick, H.Q.P., Balmer, D.E., Beaven, L.P., Downie, I.S., Freeman, S.N., Leech, D.I., Marchant, J.H., Noble, D.G., Raven, M.J., Simpkin, A.P., Thewlis, R.M. & Wernham, C.V. (2002) Breeding Birds in the Wider Countryside: their conservation status 2001. Research Report 278. BTO, Thetford. (www.bto.org/birdtrends2001)

Baillie, S.R., Brooks, S.P., King, R. & Thomas, L. (2009) Using a state-space model of the British Song Thrush Turdus philomelos population to diagnose the causes of a population decline. In Modeling Demographic Processes in Marked Populations (eds Thomson, D.L., Cooch, E.G. & Conroy, M.J.), pp 541–561. Springer, New York. Contents

Bainbridge, I. (2017) Goose management in Scotland: An Overview.  Ambio 46(Suppl 2): 224–230. doi:10.1007/s13280-016-0883-5

Baines, D. (1990) The roles of predation, food and agricultural practice in determining the breeding success of the Lapwing (Vanellus vanellus) on upland grasslands. Journal of Animal Ecology 59: 915–929.

Baines, D. & Richardson, M. (2013) Hen harriers on a Scottish grouse moor: multiple factors predict breeding density and productivity. Journal of Applied Ecology 50: 1397–1405.

Baines, D., Redpath, S., Richardson, M. & Thirgood, S. (2008) The direct and indirect effects of predation by Hen Harriers Circus cyaneus on trends in breeding birds on a Scottish grouse moor. Ibis 150: 27–36.

Baker, H., Stroud, D.A., Aebischer, N.J., Cranswick, P.A., Gregory, R.D., McSorley, C.A., Noble, D.G. & Rehfisch, M.M. (2006) Population estimates of birds in Great Britain and the United Kingdom. British Birds 99: 25–44. (APEP06)

Balmer, D.E., Gillings, S., Caffrey, B.J., Swann, R.L., Downie, I.S. & Fuller, R.J. (eds) (2013) Bird Atlas 2007–11: the breeding and wintering birds of Britain and Ireland. BTO Books, Thetford.

Banks, A.N., Crick, H.Q.P., Coombes, R., Benn, S., Ratcliffe, D.A. & Humphreys, E.M. (2010) The breeding status of Peregrine Falcons Falco peregrinus in the UK and Isle of Man in 2002. Bird Study 57: 421–436. doi: 10.1080/00063657.2010.511148

Battaglia, A., Ghidini, S., Campanini, G. & Spaggiari, R. (2005) Heavy metal contamination in Little Owl (Athene noctua) and Common Buzzard (Buteo buteo) from northern Italy. Ecotoxicology and Environmental Safety 60: 61–66.

Bauer, Z., Trnka, M., Bauerová, J., Mozný, M., Stepánek, P., Bartosová, L. & Zalud, Z. (2010) Changing climate and the phenological response of Great Tit and Collared Flycatcher populations in floodplain forest ecosystems in Central Europe. International Journal of Biometeorology 54: 99–111.

Beale, C.M., Burfield, I.J., Sim, I.M.W., Rebecca, G.W., Pearce-Higgins, J.W. & Grant, M.C. (2006) Climate change may account for the decline in British ring ouzels Turdus torquatus. Journal of Animal Ecology 75: 826–835.

Beintema, J. & Müskens, G.J.D.M. (1987) Nesting success of birds breeding in Dutch agricultural grasslands. Journal of Applied Ecology 24: 743–758.

Bell, C.P., Baker, S.W., Parkes, N.G., Brooke, M. de L. & Chamberlain, D.E. (2010) The role of the Eurasian Sparrowhawk (Accipiter nisus) in the decline of the House Sparrow (Passer domesticus) in Britain. Auk 127: 411–420.

Bell, M.V. & John Calladine, J. (2017) The decline of a population of farmland breeding waders: a twenty-five-year case study. Bird Study 64: 264–273. doi: 10.1080/00063657.2017.1319903

Bell, J.R., Botham, M.S., Henrys, P.A., Leech, D.I., Pearce-Higgins, J.W., Shortall, C.R., Brereton, T.M., Pickup, J. & Thackeray, S.J. (2019) Spatial and habitat variation in aphid, butterfly, moth and bird phenologies over the last half century. Global Change Biology 25: 1982–1994.   doi:10.1111/gcb.14592

Bellamy, P.E., Shore, R.F., Ardeshir, D., Treweek, J.R. & Sparks, T.H. (2000) Road verges as habitat for small mammals in Britain. Mammal Review 30: 131–139.

Bellamy, P.E., Malcolm D. Burgess, M.D., Mallord, J.W., Cristinacce, A., Orsman, C.J., Davis, T., Grice, P.V. & Charman, E.C. (2017) Nest predation and the infuence of habitat structure on nest predation of Wood Warbler Phylloscopus sibilatrix, a ground‑nesting forest passerine. Journal of Ornithology 159: 493–506. doi: 10.1007/s10336-018-1558-8

Bellebaum, J. & Bock, C. (2009) Influence of ground predators and water levels on Lapwing Vanellus vanellus breeding success in two continental wetlands. Journal of Ornithology 150: 221–230.

Benton, T.G., Bryant, D.M., Cole, L. & Crick, H.Q.P. (2002) Linking agricultural practice to insect and bird populations: a historical study over three decades. Journal of Applied Ecology 39: 673–687.

Berg, C. (1992) Habitat selection by breeding Curlews Numenius arquata on mosaic farmland. Ibis 134: 355–360.

Besbeas, P., Freeman, S.N., Morgan, B.J.T. & Catchpole, E.A. (2002) Integrating mark–recapture–recovery and census data to estimate animal abundance and demographic parameters. Biometrics 58: 540–547.

Bibby, C.J. (1989) A survey of breeding Wood Warblers Phylloscopus sibilatrix, in Britain 1984–85. Bird Study 36: 56–72.

Bibby, C.J. & Etheridge, B. (1993) Status of the Hen Harrier Circus cyaneus in Scotland in 1988–89. Bird Study 40: 1–11.

BirdLife International (2004) Birds in Europe: population estimates, trends and conservation status. BirdLife Conservation Series no 12. BirdLife International, Cambridge.

BirdLife International (2015a) IUCN Red List for birds. www.birdlife.org/datazone/home

BirdLife International (2015b) European Red List of birds. Office for Official Publications of the European Communities, Luxembourg. Full text

Birkhead, M. & Perrins, C. (1985) The breeding biology of the Mute Swan Cygnus olor on the River Thames with special reference to lead poisoning. Biological Conservation 32: 1–11.

Birkhead, M., Bacon, P.J. & Walter, P. (1983) Factors affecting the breeding success of the Mute Swan Cygnus olor. Journal of Animal Ecology 52: 727–741.

Blackburn, E. & Cresswell, W. (2016a) High winter site fidelity in a long-distance migrant: implications for wintering ecology and survival estimates. Journal of Ornithology 157: 93. doi: 10.1007/s10336-015-1252-z

Blackburn, E. & Cresswell, W. (2016b) High within-winter and annual survival rates in a declining Afro-Palaearctic migratory bird suggest that wintering conditions do not limit populations. Ibis 158: 92–105. doi: 10.1111/ibi.12319

Blaker, G.B. (1933) The Barn Owl in England: results of the census. I and II. Bird Notes and News 15: 169–172.

Blaker, G.B. (1934) The Barn Owl in England and Wales. RSPB, London.

Blus, L.J. (1994) A review of lead poisoning in swans. Comparative Biochemistry and Physiology Part C Pharmacology, Toxicology and Endocrinology 108: 259–267.

Boatman, N.D., Brickle, N.W., Hart, J.D., Milsom, T.P., Morris, A.J., Murray, A.W.A., Murray, K.A. & Robertson, P.A. (2004) Evidence for the indirect effects of pesticides on farmland birds. Ibis 146: 131–143.

Bodey, T.W., McDonald, R.A., Sheldon, R.D. & Bearhop, S. (2011) Absence of effects of predator control on nesting success of Northern Lapwings Vanellus vanellus: implications for conservation. Ibis 153: 543–555.

Bolton, M., Tyler, G., Smith, K. & Bamford, R. (2007) The impact of predator control on lapwing Vanellus vanellus breeding success on wet grassland nature reserves. Journal of Applied Ecology 44: 534–544.

Bonham, P.F. & Robertson, J.C.M. (1975) The spread of Cetti’s Warbler in north-west Europe. British Birds 68: 393–408.

Border, J., Henderson, I.G., Redhead, J.W. & Hartley, I.R. (2016) Habitat selection by breeding Whinchats Saxicola rubetra at territory and landscape scales. Ibis doi: 10.1111/ibi.12433

Border, J.A., Henderson, I.G. & Hartley, I.R. (2017) Characterising demographic contributions to observed population change in a declining migrant bird. Journal of Avian Biology 48:1139–1149. doi: 10.1111/jav.01305

Both, C. (2002) Nemen Bonte Vliegenvangers Ficedula hypoleuca af door klimaatsverandering? [Decrease of European Pied Flycatchers due to climate change?] Limosa 75: 73–78.

Both, C. (2010) Flexibility of timing of avian migration to climate change masked by environmental constraints en route. Current Biology 20: 243–248.

Both, C., Bouwhuis, S., Lessells, C.M. & Visser, M.E. (2006) Climate change and population declines in a long-distance migratory bird. Nature 441 (4): 81–83. Full text

Both, C., van Asch, M., Bijlsma, R.G., van den Burg, A.B. & Visser, M.E. (2009) Climate change and unequal phenological changes across four trophic levels: constraints or adaptations? Journal of Animal Ecology 78: 73–83.

Both, C., Van Turnhout, C.A.M., Bijlsma, R.G., Siepel, H., Van Strien, A.J. & Foppen, R.P.B. (2010) Avian population consequences of climate change are most severe for long-distance migrants in seasonal habitats. Proceedings of the Royal Society of London Series B 277: 1259–1266. Full text

Both, C., Burger, C., Ouwehand, J., Samplonius, J.M., Ubels, R. & Bijlsma, R.G. (2017) Delayed Age at First Breeding and Experimental Removals Show Large Non-Breeding Surplus in Pied Flycatchers. Ardea 105: 43–60. doi: 10.5253/arde.v105i1.a2

Bourquin, J.D. (1983) Mortalité des rapaces le long de l’autoroute Genève–Lausanne. Nos Oiseaux 37: 149–169.

Bowler, D.E., Heldbjerg, H., Fox, A.D., de Jong, M., Bohning-Gaese, K. (2019) Long-term declines of European insectivorous bird populations and potential causes. Conservation Biology 33: 1120-1130. doi: 10.1111/cobi.13307

Bradbury, R.B. & Bradter, U. (2004) Habitat associations of Yellow Wagtails Motacilla flava flavissima on lowland wet grassland. Ibis 146: 241–246.

Bradbury, R. & Stoate, C. (2000) The ecology of Yellowhammers Emberiza citrinella on lowland farmland. In Ecology and Conservation of Lowland Farmland Birds (eds Aebischer, N.J., Evans, A.D., Grice, P.V. & Vickery, J.A.), 165–172. British Ornithologists’ Union, Tring.

Brickle, N.W. (1999) The effect of agricultural intensification on the decline of the Corn Bunting, Miliaria calandra. DPhil thesis, University of Sussex.

Brickle, N.W. & Harper, D.G.C. (1999) Diet of nestling Corn Buntings Miliaria calandra in southern England examined by compositional analysis of faeces. Bird Study 46: 319–329.

Brickle, N.W. & Harper, D.G.C. (2000) Habitat use by Corn Buntings Miliaria calandra in winter and summer. In Ecology and Conservation of Lowland Farmland Birds (eds Aebischer, N.J., Evans, A.D., Grice, P.V. & Vickery, J.A.), 156–164. British Ornithologists’ Union, Tring.

Brickle, N.W. & Harper, D.G. (2002) Agricultural intensification and the timing of breeding of Corn Buntings Miliaria calandra. Bird Study 49: 219–228.

Brickle, N.W., Harper, D.G.C., Aebischer, N.J. & Cockayne, S.H. (2000) Effects of agricultural intensification on the breeding success of Corn Buntings Miliaria calandra. Journal of Applied Ecology 37: 742–755.

Brindley, E., Norris, K., Cook, T., Babbs, S., Forster-Browne, C. & Yaxley, R. (1998) The abundance and conservation status of redshank (Tringa totanus) nesting on saltmarshes in Great Britain. Biological Conservation 86: 289–297.

Brinkhof, M.W.G. & Cavé, A.J. (1997) Food supply and seasonal variation in breeding success: an experiment in the European Coot. Proceedings of the Royal Society B Biological Sciences 264: 291–296.

Britschgi, A., Spaar, R. & Arlettaz, R. (2006) Impact of grassland farming intensification on the breeding ecology of an indicator insectivorous passerine, the Whinchat Saxicola rubetra: lessons for overall Alpine meadowland management. Biological Conservation 130: 193–205.

Bro, E., Sarrazin, F., Clobert, J. & Reitz, F. (2000) Demography and the decline of the Grey Partridge Perdix perdix in France. Journal of Applied Ecology 37: 432–448.

Brooke, M. de L. & Davies, N.B. (1987) Recent changes in host usage by cuckoos Cuculus canorus in Britain. Journal of Animal Ecology 56: 873–883.

Brooks, S.P., King, R. & Morgan, B.J.T. (2004) A Bayesian approach to combining animal abundance and demographic data. Animal Biodiversity and Conservation 27: 515–529.

Broughton, R.K. & Hinsley, S.A. (2015) The ecology and conservation of the Marsh Tit in Britain. British Birds 108: 12–29.

Broughton, R., Hinsley, S., Bellamy, P., Hill, R. & Rothery, P. (2006) Marsh Tit Poecile palustris territories in a British broad-leaved wood. Ibis 148: 744–752.

Brown, A.F., Crick, H.Q.P. & Stillman, R.A. (1995) The distribution, numbers and breeding ecology of Twite Acanthis flavirostris in the south Pennines of England. Bird Study 42: 107–121.

Brown, A.W. & Brown, L.M. (1984) The status of the Mute Swan in the Lothians. Scottish Birds 13: 8–15.

Brown, D., Wilson, J., Douglas, D., Thompson, P., Foster, S., McCulloch, N., Phillips, J., Stroud, D., Whitehead, S., Crockford, N. & Sheldon, R. (2015) The Eurasian Curlew – the most pressing bird conservation priority in the UK? British Birds 108: 660–668.

Browne, S. & Aebischer, N. (2001) The role of agricultural intensification in the decline of the Turtle Dove Streptopelia turtur. English Nature, Peterborough.

Browne, S. & Aebischer, N. (2002) Temporal changes in the breeding and feeding ecology of Turtle Doves (Streptopelia turtur) in the UK: an overview. Zeitschrift für Jagdwissenschaft 48: 215–221.

Browne, S.J. & Aebischer, N.J. (2003) Temporal changes in the migration phenology of Turtle Doves Streptopelia turtur in Britain, based on sightings from coastal bird observatories. Journal of Avian Biology 34: 65–71.

Browne, S.J. & Aebischer, N.J. (2004) Temporal changes in the breeding ecology of European Turtle Doves Streptopelia turtur in Britain, and implications for conservation. Ibis 146: 125–137.

Browne, S. & Aebischer, N. (2005) Studies of West Palearctic birds: Turtle Dove. British Birds 98: 58–72.

Browne, S., Vickery, J.A. & Chamberlain, D.E. (2000) Densities and population estimates of breeding Skylarks Alauda arvensis in Britain in 1997. Bird Study 47: 52–65. doi: 10.1080/00063650009461

Browne, S., Aebischer, N., Yfantis, G. & Marchant, J.H. (2004) Habitat availability and use by Turtle Doves Streptopelia turtur between 1965 and 1995: an analysis of Common Birds Census data. Bird Study 51: 1–11.

Browne, S.J., Aebischer, N.J. & Crick, H.Q.P. (2005) The breeding ecology of Turtle Doves Streptopelia turtur in Britain during the period 1941 to 2000: an analysis of BTO Nest Record Card

160s. Bird Study 52: 1–9. doi: 10.1080/00063650509461368

Browne, S.J., Aebischer, N.J., Moreby, S.J. & Teague, L. (2006) The diet and disease susceptibility of Grey Partridges Perdix perdix on arable farmland in East Anglia, England. Wildlife Biology 12: 3–10.

Broyer, J. (2009) Whinchat Saxicola rubetra reproductive success according to hay cutting schedule and meadow passerine density in alluvial and upland meadows in France. Journal for Nature Conservation 17: 160–167.

Bryant, D.M. (1975). Breeding biology of house martins Delichon urbica in relation to aerial insect abundance. Ibis 117: 180-216.

Bryant, D.M. (1979). Reproductive costs in the House Martin (Delichon urbica). Journal of Animal Ecology 48: 655-675.

Buchanan, G.M., Pearce-Higgins, J.W., Wotton, S.R., Grant, M.C. & Whitfield, D.P. (2003) Correlates of the change in Ring Ouzel Turdus torquatus abundance in Scotland from 1988–91 to 1999. Bird Study 50: 97–105. doi: 10.1080/00063650309461300

Buchanan, G.M., Pearce-Higgins, J.W., Douglas, D.J.T. & Grant, M.C. (2017) Quantifying the importance of multi-scale management and environmental variables on moorland bird abundance. Ibis 159: 744–756. doi: 10.1111/ibi.12488

Buchanan, G.M., Mallord, J.W., Orsman, C.J., Roberts, J.T., Bofo, K., Skeen, R.Q., Whytock, R.C., Hulme, M.F., Guilain, T., Segniagbeto, G.H., Assou, D. & Vickery, J.A. (2018) Changes in the area of optimal tree cover of a declining Afro-Palearctic migrant across the species' wintering range. Ibis [early view] doi: 10.1111/ibi.12690

Buckland, S.T., Cattanach, K.L. & Anganuzzi, A.A. (1992) Estimating trends in abundance of dolphins associated with tuna in the eastern tropical Pacific Ocean, using sightings data collected on commercial tuna vessels. Fishery Bulletin 90: 1–20.

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