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Search settings Search Order by: Order by Latest Oldest Filter by: BTO Author Species Partners Publication Year Project Region Science topic BTO Author Adham Ashton-ButtAilidh BarnesAli JohnstonAllison KewAmanda TraskAmy ChallisAndrew DobsonAndrew JoysAndy ClementsAndy MusgroveAnna RenwickAnne CottonAnthony WetherhillAonghais CookBen DarvillBjörn BeckmannBlaise MartayBob SwannBrian EtheridgeBridget GriffinCallum MacgregorCarl BarimoreCaroline BrightonCat MorrisonCatharine HorswillCharlotte WattsChas HoltChris HewsonChris PollockChris ThaxterChris WernhamClaire BoothbyClare SimmDan ChamberlainDaniel JohnstonDaria DadamDario MassiminoDavid DouglasDavid JarrettDavid NobleDavid NorfolkDawn BalmerDiana de PalacioDorian MossEllie LeechEmily ScraggEmma CaulfieldEsther KettelGary ClewleyGavin SiriwardenaGraham AppletonGraham AustinGreg ConwayHannah HerewardHarry EwingHazel McCambridgeHeidi MellanHenrietta PringleHugh HanmerIain DownieIan HendersonIan WoodwardJacob DaviesJacquie ClarkJames BrayJames ClarkeJames HeywoodJames Pearce-HigginsJennifer BorderJeremy SmithJez BlackburnJoe CooperJohn CalladineJohn MarchantJuliet VickeryKaren WrightKate PlummerKate RiselyKatharine BowgenKatherine Booth JonesKelvin JonesKev LeightonLee BarberLiz HumphreysLucy WrightMadeleine BartonMáire KirklandMandy CookMark GranthamMark HulmeMark MillerMark RehfischMark WilsonMartin SullivanMike TomsNancy OckendonNeil CalbradeNiall BurtonNick MoranNicola BuggNigel ClarkNina O’HanlonPaul NoyesPeadar O'ConnellPeter LackPhil AtkinsonPhilipp Boersch-SupanRachel TaylorRob FullerRob RobinsonRobert JaquesRos GreenRuth WalkerSabine SchäeferSamantha FranksSamuel LangloisSarah EglingtonSarah HarrisShane WolseySimon GillingsSophie BennettStaffan RoosStephen BaillieStephen McAvoyStuart NewsonSu GoughTeresa FrostTim HarrisonViola Ross-Smith Species Arctic SkuaArctic TernAvocetBadgerBar-tailed GodwitBarnacle GooseBatsBewick’s SwanBlack GrouseBlack GuillemotBlack RatBlack-headed GullBlack-tailed GodwitBlack-throated DiverBlackbirdBlackcapBlue TitBrown RatButterflies and mothsBuzzardCanada GooseCarrion CrowChaffinchChiffchaffChoughCommon GullCommon NighthawkCommon TernCormorantCorn BuntingCuckooCurlewCurlew SandpiperDunlinEdible DormouseEiderFieldfareFulmarGannetGatekeeperGolden EagleGolden OrioleGolden PloverGoldeneyeGoldfinchGoosanderGoshawkGreat Black-backed GullGreat Crested GrebeGreat Northern DiverGreat SkuaGreat TitGreater Spotted EagleGreen-veined WhiteGreenfinchGreenshankGrey PloverGuillemotHarvest MouseHazel DormouseHerring GullHobbyHooded CrowHouse MartinHouse MouseHouse SparrowInvertebratesJayKittiwakeKnotLapwingLeach’s PetrelLesser Black-backed GullLesser Spotted WoodpeckerLinnetLittle OwlLittle Ringed PloverLittle TernLong-tailed DuckLong-tailed TitMagpieMallardMammalsManx ShearwaterMarsh TitMediterranean GullMontagu’s HarrierMoorhenNightingaleNightjarNuthatchOriental CuckooOystercatcherPeregrinePheasantPied FlycatcherPuffinPurple SandpiperRavenRazorbillRed-backed ShrikeRed-breasted MerganserRed-legged PartridgeRed-throated DiverRedshankRedstartRedwingRing-necked ParakeetRinged PloverRookRoseate TernRuffSanderlingSandwich TernSemipalmated SandpiperSerinShagShelduckShort-eared OwlShort-toed TreecreeperSiskinSkylarkSlavonian GrebeSmall WhiteSmewSnipeSong ThrushSpotted FlycatcherSpotted RedshankStarlingStorm PetrelSwallowSwiftTawny OwlTealTemminck’s StintTree PipitTree SparrowTurnstoneTurtle DoveVelvet ScoterWhimbrelWhinchatWhite StorkWhite-fronted GooseWhite-tailed EagleWillow TitWillow WarblerWood mouseWood WarblerWoodcockWoodpigeonWrenWryneckYellow-browed WarblerYellow-legged GullYellow-necked Mouse Partners BTO DAERA JNCC Natural England NatureScot RSPB From year Choose2025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995 To year Choose2025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995 Month Month ChooseJanFebMarAprMayJunJulAugSepOctNovDec Day Day Choose12345678910111213141516171819202122232425262728293031 Project ChooseBird Ringing SchemeBirds in GreenspacesBirdTrackBlackbirds in GardensBreeding Bird Survey (BBS)BTO Acoustic PipelineCuckoo Tracking ProjectCudyll Cymru – Monitoring Raptors in WalesCudyll Cymru – Monitoring Raptors in Wales (Cymraeg)Gamekeeper Wader TransectsGarden Bird Feeding SurveyGarden BirdWatchGarden Wildlife HealthGoose and Swan Monitoring ProgrammeHeathland Birds SurveyHeronries CensusNest Record SchemeNesting NeighboursSeabird Monitoring ProgrammeVolunteer Mountain Hare SurveyWader CalendarWaterways Breeding Bird SurveyWetland Bird Survey (WeBS)Winter Bird SurveyWoodcock Survey Region UK East of England South East England East Midlands South West Ireland London West Midlands Island territories North East Yorkshire and the Humber Northern Ireland North West Scotland Wales Science topic Biodiversity Birds and people Climate change Conservation Demographics Farmland Grassland Habitats International Marine Migration Monitoring Non-natives Other wildlife Population dynamics Predators Renewables Species interactions Technology Tracking Upland Urban Wetland Wildlife health Woodland Search Reset Chaffinch Fringilla coelebs foraging patterns, nestling survival and territory distribution on lowland farmland Author: Whittingham, M.J., Bradbury, R.B., Wilson, J.D., Morris, A.J., Perkins, A.J. & Siriwardena, G.M. Published: 2001 01.01.01 Papers Bird Study Identification of Marsh Warblers Acrocephalus palustris and Reed Warblers A. scirpaceus on autumn migration through the eastern Mediterranean. Author: Wilson, J.D., Akriotis, T., Balmer, D.E. & Kyrkos, A. Published: 2001 Published criteria for the separation of Reed Warbler Acrocephalus scirpaceus and Marsh Warbler A palustris in the hand were found to be of limited value in identifying these species in samples captured during autumn migration through the island of Lesvos in the Aegean Sea. This is probably because Reed Warbler morphology varies clinally with birds in eastern Europe (likely to be migrating through Lesvos) being more similar to Marsh Warblers than are populations in western Europe from which existing identification criteria were calculated. However, a modified biometric index did separate a sample of 364 birds captured during August and September 1994–1996 and 1998 into two clear‐cut groups along the morphological gradient which is known to distinguish the two species. We were therefore confident that these two groups comprised Marsh and Reed Warblers. Linear Discriminant Function Analysis confirmed that this index could be used to identify approximately 95% of the birds in our sample. The index also correlates well with independent assessments of bare part colouration (eg leg colour) which are known to be of use in distinguishing the two species. We suggest that this index will be useful for identifying Reed and Marsh Warblers wherever migrating populations of the two species drawn from a wide geographical area occur together. 01.01.01 Papers Ringing and Migration Download file The nature conservation value of scrub in Britain. Author: Mortimer, S.R., Turner, A.J., Brown, V.K., Fuller, R.J., Good, J.E.G., Bell, S.A., Stevens, P.A., Norris, D., Bayfield, N. & Ward, L.K. Published: 2000 01.01.00 Papers View this paper online Regional trends in coastal wintering waders in Britain Author: Austin, G.E., Peachel, I. & Rehfisch, M.M. Published: 2000 01.01.00 Papers Bird Study View this paper online Consequences of large-scale processes for the conservation of bird populations Author: Baillie, S.R., Sutherland, W.J., Freeman, S.N., Gregory, R.D. & Paradis, E. Published: 2000 01.01.00 Papers View this paper online Factors influencing Soay sheep survival Author: Catchpole, E.A., Morgan, B.J.T., Coulson, T.N., Freeman, S.N. & Albon, S.D. Published: 2000 01.01.00 Papers Habitat selection by terrestrial birds on Pemba Island (Tanzania), with particular reference to six endemic taxa Author: Catry, P., Mellanby, R., Ali Suleiman, K., Haji Salim, K., Hughes, M., McKean, M., Anderson, N., Constant, G., Heany, V., Martin, G., Armitage, M. & Wilson, M. Published: 2000 01.01.00 Papers Pagination First page First Previous page Previous … Page 191 Page 192 Page 193 Page 194 Page 195 Page 196 Page 197 Page 198 Page 199 … Next page Next Last page Last
Search settings Search Order by: Order by Latest Oldest Filter by: BTO Author Species Partners Publication Year Project Region Science topic BTO Author Adham Ashton-ButtAilidh BarnesAli JohnstonAllison KewAmanda TraskAmy ChallisAndrew DobsonAndrew JoysAndy ClementsAndy MusgroveAnna RenwickAnne CottonAnthony WetherhillAonghais CookBen DarvillBjörn BeckmannBlaise MartayBob SwannBrian EtheridgeBridget GriffinCallum MacgregorCarl BarimoreCaroline BrightonCat MorrisonCatharine HorswillCharlotte WattsChas HoltChris HewsonChris PollockChris ThaxterChris WernhamClaire BoothbyClare SimmDan ChamberlainDaniel JohnstonDaria DadamDario MassiminoDavid DouglasDavid JarrettDavid NobleDavid NorfolkDawn BalmerDiana de PalacioDorian MossEllie LeechEmily ScraggEmma CaulfieldEsther KettelGary ClewleyGavin SiriwardenaGraham AppletonGraham AustinGreg ConwayHannah HerewardHarry EwingHazel McCambridgeHeidi MellanHenrietta PringleHugh HanmerIain DownieIan HendersonIan WoodwardJacob DaviesJacquie ClarkJames BrayJames ClarkeJames HeywoodJames Pearce-HigginsJennifer BorderJeremy SmithJez BlackburnJoe CooperJohn CalladineJohn MarchantJuliet VickeryKaren WrightKate PlummerKate RiselyKatharine BowgenKatherine Booth JonesKelvin JonesKev LeightonLee BarberLiz HumphreysLucy WrightMadeleine BartonMáire KirklandMandy CookMark GranthamMark HulmeMark MillerMark RehfischMark WilsonMartin SullivanMike TomsNancy OckendonNeil CalbradeNiall BurtonNick MoranNicola BuggNigel ClarkNina O’HanlonPaul NoyesPeadar O'ConnellPeter LackPhil AtkinsonPhilipp Boersch-SupanRachel TaylorRob FullerRob RobinsonRobert JaquesRos GreenRuth WalkerSabine SchäeferSamantha FranksSamuel LangloisSarah EglingtonSarah HarrisShane WolseySimon GillingsSophie BennettStaffan RoosStephen BaillieStephen McAvoyStuart NewsonSu GoughTeresa FrostTim HarrisonViola Ross-Smith Species Arctic SkuaArctic TernAvocetBadgerBar-tailed GodwitBarnacle GooseBatsBewick’s SwanBlack GrouseBlack GuillemotBlack RatBlack-headed GullBlack-tailed GodwitBlack-throated DiverBlackbirdBlackcapBlue TitBrown RatButterflies and mothsBuzzardCanada GooseCarrion CrowChaffinchChiffchaffChoughCommon GullCommon NighthawkCommon TernCormorantCorn BuntingCuckooCurlewCurlew SandpiperDunlinEdible DormouseEiderFieldfareFulmarGannetGatekeeperGolden EagleGolden OrioleGolden PloverGoldeneyeGoldfinchGoosanderGoshawkGreat Black-backed GullGreat Crested GrebeGreat Northern DiverGreat SkuaGreat TitGreater Spotted EagleGreen-veined WhiteGreenfinchGreenshankGrey PloverGuillemotHarvest MouseHazel DormouseHerring GullHobbyHooded CrowHouse MartinHouse MouseHouse SparrowInvertebratesJayKittiwakeKnotLapwingLeach’s PetrelLesser Black-backed GullLesser Spotted WoodpeckerLinnetLittle OwlLittle Ringed PloverLittle TernLong-tailed DuckLong-tailed TitMagpieMallardMammalsManx ShearwaterMarsh TitMediterranean GullMontagu’s HarrierMoorhenNightingaleNightjarNuthatchOriental CuckooOystercatcherPeregrinePheasantPied FlycatcherPuffinPurple SandpiperRavenRazorbillRed-backed ShrikeRed-breasted MerganserRed-legged PartridgeRed-throated DiverRedshankRedstartRedwingRing-necked ParakeetRinged PloverRookRoseate TernRuffSanderlingSandwich TernSemipalmated SandpiperSerinShagShelduckShort-eared OwlShort-toed TreecreeperSiskinSkylarkSlavonian GrebeSmall WhiteSmewSnipeSong ThrushSpotted FlycatcherSpotted RedshankStarlingStorm PetrelSwallowSwiftTawny OwlTealTemminck’s StintTree PipitTree SparrowTurnstoneTurtle DoveVelvet ScoterWhimbrelWhinchatWhite StorkWhite-fronted GooseWhite-tailed EagleWillow TitWillow WarblerWood mouseWood WarblerWoodcockWoodpigeonWrenWryneckYellow-browed WarblerYellow-legged GullYellow-necked Mouse Partners BTO DAERA JNCC Natural England NatureScot RSPB From year Choose2025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995 To year Choose2025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995 Month Month ChooseJanFebMarAprMayJunJulAugSepOctNovDec Day Day Choose12345678910111213141516171819202122232425262728293031 Project ChooseBird Ringing SchemeBirds in GreenspacesBirdTrackBlackbirds in GardensBreeding Bird Survey (BBS)BTO Acoustic PipelineCuckoo Tracking ProjectCudyll Cymru – Monitoring Raptors in WalesCudyll Cymru – Monitoring Raptors in Wales (Cymraeg)Gamekeeper Wader TransectsGarden Bird Feeding SurveyGarden BirdWatchGarden Wildlife HealthGoose and Swan Monitoring ProgrammeHeathland Birds SurveyHeronries CensusNest Record SchemeNesting NeighboursSeabird Monitoring ProgrammeVolunteer Mountain Hare SurveyWader CalendarWaterways Breeding Bird SurveyWetland Bird Survey (WeBS)Winter Bird SurveyWoodcock Survey Region UK East of England South East England East Midlands South West Ireland London West Midlands Island territories North East Yorkshire and the Humber Northern Ireland North West Scotland Wales Science topic Biodiversity Birds and people Climate change Conservation Demographics Farmland Grassland Habitats International Marine Migration Monitoring Non-natives Other wildlife Population dynamics Predators Renewables Species interactions Technology Tracking Upland Urban Wetland Wildlife health Woodland Search Reset Chaffinch Fringilla coelebs foraging patterns, nestling survival and territory distribution on lowland farmland Author: Whittingham, M.J., Bradbury, R.B., Wilson, J.D., Morris, A.J., Perkins, A.J. & Siriwardena, G.M. Published: 2001 01.01.01 Papers Bird Study Identification of Marsh Warblers Acrocephalus palustris and Reed Warblers A. scirpaceus on autumn migration through the eastern Mediterranean. Author: Wilson, J.D., Akriotis, T., Balmer, D.E. & Kyrkos, A. Published: 2001 Published criteria for the separation of Reed Warbler Acrocephalus scirpaceus and Marsh Warbler A palustris in the hand were found to be of limited value in identifying these species in samples captured during autumn migration through the island of Lesvos in the Aegean Sea. This is probably because Reed Warbler morphology varies clinally with birds in eastern Europe (likely to be migrating through Lesvos) being more similar to Marsh Warblers than are populations in western Europe from which existing identification criteria were calculated. However, a modified biometric index did separate a sample of 364 birds captured during August and September 1994–1996 and 1998 into two clear‐cut groups along the morphological gradient which is known to distinguish the two species. We were therefore confident that these two groups comprised Marsh and Reed Warblers. Linear Discriminant Function Analysis confirmed that this index could be used to identify approximately 95% of the birds in our sample. The index also correlates well with independent assessments of bare part colouration (eg leg colour) which are known to be of use in distinguishing the two species. We suggest that this index will be useful for identifying Reed and Marsh Warblers wherever migrating populations of the two species drawn from a wide geographical area occur together. 01.01.01 Papers Ringing and Migration Download file The nature conservation value of scrub in Britain. Author: Mortimer, S.R., Turner, A.J., Brown, V.K., Fuller, R.J., Good, J.E.G., Bell, S.A., Stevens, P.A., Norris, D., Bayfield, N. & Ward, L.K. Published: 2000 01.01.00 Papers View this paper online Regional trends in coastal wintering waders in Britain Author: Austin, G.E., Peachel, I. & Rehfisch, M.M. Published: 2000 01.01.00 Papers Bird Study View this paper online Consequences of large-scale processes for the conservation of bird populations Author: Baillie, S.R., Sutherland, W.J., Freeman, S.N., Gregory, R.D. & Paradis, E. Published: 2000 01.01.00 Papers View this paper online Factors influencing Soay sheep survival Author: Catchpole, E.A., Morgan, B.J.T., Coulson, T.N., Freeman, S.N. & Albon, S.D. Published: 2000 01.01.00 Papers Habitat selection by terrestrial birds on Pemba Island (Tanzania), with particular reference to six endemic taxa Author: Catry, P., Mellanby, R., Ali Suleiman, K., Haji Salim, K., Hughes, M., McKean, M., Anderson, N., Constant, G., Heany, V., Martin, G., Armitage, M. & Wilson, M. Published: 2000 01.01.00 Papers Pagination First page First Previous page Previous … Page 191 Page 192 Page 193 Page 194 Page 195 Page 196 Page 197 Page 198 Page 199 … Next page Next Last page Last
Chaffinch Fringilla coelebs foraging patterns, nestling survival and territory distribution on lowland farmland Author: Whittingham, M.J., Bradbury, R.B., Wilson, J.D., Morris, A.J., Perkins, A.J. & Siriwardena, G.M. Published: 2001 01.01.01 Papers Bird Study
Identification of Marsh Warblers Acrocephalus palustris and Reed Warblers A. scirpaceus on autumn migration through the eastern Mediterranean. Author: Wilson, J.D., Akriotis, T., Balmer, D.E. & Kyrkos, A. Published: 2001 Published criteria for the separation of Reed Warbler Acrocephalus scirpaceus and Marsh Warbler A palustris in the hand were found to be of limited value in identifying these species in samples captured during autumn migration through the island of Lesvos in the Aegean Sea. This is probably because Reed Warbler morphology varies clinally with birds in eastern Europe (likely to be migrating through Lesvos) being more similar to Marsh Warblers than are populations in western Europe from which existing identification criteria were calculated. However, a modified biometric index did separate a sample of 364 birds captured during August and September 1994–1996 and 1998 into two clear‐cut groups along the morphological gradient which is known to distinguish the two species. We were therefore confident that these two groups comprised Marsh and Reed Warblers. Linear Discriminant Function Analysis confirmed that this index could be used to identify approximately 95% of the birds in our sample. The index also correlates well with independent assessments of bare part colouration (eg leg colour) which are known to be of use in distinguishing the two species. We suggest that this index will be useful for identifying Reed and Marsh Warblers wherever migrating populations of the two species drawn from a wide geographical area occur together. 01.01.01 Papers Ringing and Migration Download file
The nature conservation value of scrub in Britain. Author: Mortimer, S.R., Turner, A.J., Brown, V.K., Fuller, R.J., Good, J.E.G., Bell, S.A., Stevens, P.A., Norris, D., Bayfield, N. & Ward, L.K. Published: 2000 01.01.00 Papers View this paper online
Regional trends in coastal wintering waders in Britain Author: Austin, G.E., Peachel, I. & Rehfisch, M.M. Published: 2000 01.01.00 Papers Bird Study View this paper online
Consequences of large-scale processes for the conservation of bird populations Author: Baillie, S.R., Sutherland, W.J., Freeman, S.N., Gregory, R.D. & Paradis, E. Published: 2000 01.01.00 Papers View this paper online
Factors influencing Soay sheep survival Author: Catchpole, E.A., Morgan, B.J.T., Coulson, T.N., Freeman, S.N. & Albon, S.D. Published: 2000 01.01.00 Papers
Habitat selection by terrestrial birds on Pemba Island (Tanzania), with particular reference to six endemic taxa Author: Catry, P., Mellanby, R., Ali Suleiman, K., Haji Salim, K., Hughes, M., McKean, M., Anderson, N., Constant, G., Heany, V., Martin, G., Armitage, M. & Wilson, M. Published: 2000 01.01.00 Papers