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Search settings 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 SiriwardenaGillian BirtlesGraham 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 ThrushSparrowhawkSpotted FlycatcherSpotted RedshankStarlingStorm PetrelSwallowSwiftTawny OwlTealTemminck’s StintTree PipitTree SparrowTurnstoneTurtle DoveVelvet ScoterWhimbrelWhinchatWhite StorkWhite-fronted GooseWhite-tailed EagleWhooper SwanWillow TitWillow WarblerWood mouseWood WarblerWoodcockWoodpigeonWrenWryneckYellow-browed WarblerYellow-legged GullYellow-necked Mouse Partners BTO DAERA JNCC Natural England NatureScot RSPB From year Choose2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999199819971996 To year Choose2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999199819971996 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 CalendarWader Monitoring SchemeWaterways Breeding Bird SurveyWetland Bird Survey (WeBS)Winter Bird SurveyWoodcock Survey Region UK England East Midlands East of England London North East North West South East South West West Midlands Yorkshire and the Humber Northern Ireland Scotland Wales Ireland Isle of Man Guernsey Jersey Marine region away from land 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 all Factors affecting the distribution of Skylarks Alauda arvensis wintering in Britain and Ireland during the early 1980s Author: Published: 2001 01.01.01 Papers Can the historical CBC trend for skylarks Alauda arvensis be 'recovered' using present-day agricultural habitat preferences and changes in agricultural land-use? Author: Published: 2001 01.01.01 Papers The decline of the Bullfinch Pyrrhula pyrrhula in Britain: is the mechanism known? Author: Published: 2001 01.01.01 Papers Aggressive behaviour and correlates of dominance in Purple Sandpipers Calidris maritima at a communal winter roost Author: Published: 2001 01.01.01 Papers Habitat association of breeding Meadow Pipits Anthus pratensis in the British uplands Author: Published: 2001 01.01.01 Papers Bird Study Chaffinch Fringilla coelebs foraging patterns, nestling survival and territory distribution on lowland farmland Author: 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: 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 Read Online Pagination First page First Previous page Previous … Tudalen 193 Tudalen 194 Tudalen 195 Tudalen 196 Tudalen 197 Tudalen 198 Tudalen 199 Tudalen 200 Tudalen 201 … Next page Next Last page Last
Search settings 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 SiriwardenaGillian BirtlesGraham 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 ThrushSparrowhawkSpotted FlycatcherSpotted RedshankStarlingStorm PetrelSwallowSwiftTawny OwlTealTemminck’s StintTree PipitTree SparrowTurnstoneTurtle DoveVelvet ScoterWhimbrelWhinchatWhite StorkWhite-fronted GooseWhite-tailed EagleWhooper SwanWillow TitWillow WarblerWood mouseWood WarblerWoodcockWoodpigeonWrenWryneckYellow-browed WarblerYellow-legged GullYellow-necked Mouse Partners BTO DAERA JNCC Natural England NatureScot RSPB From year Choose2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999199819971996 To year Choose2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999199819971996 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 CalendarWader Monitoring SchemeWaterways Breeding Bird SurveyWetland Bird Survey (WeBS)Winter Bird SurveyWoodcock Survey Region UK England East Midlands East of England London North East North West South East South West West Midlands Yorkshire and the Humber Northern Ireland Scotland Wales Ireland Isle of Man Guernsey Jersey Marine region away from land 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 all Factors affecting the distribution of Skylarks Alauda arvensis wintering in Britain and Ireland during the early 1980s Author: Published: 2001 01.01.01 Papers Can the historical CBC trend for skylarks Alauda arvensis be 'recovered' using present-day agricultural habitat preferences and changes in agricultural land-use? Author: Published: 2001 01.01.01 Papers The decline of the Bullfinch Pyrrhula pyrrhula in Britain: is the mechanism known? Author: Published: 2001 01.01.01 Papers Aggressive behaviour and correlates of dominance in Purple Sandpipers Calidris maritima at a communal winter roost Author: Published: 2001 01.01.01 Papers Habitat association of breeding Meadow Pipits Anthus pratensis in the British uplands Author: Published: 2001 01.01.01 Papers Bird Study Chaffinch Fringilla coelebs foraging patterns, nestling survival and territory distribution on lowland farmland Author: 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: 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 Read Online Pagination First page First Previous page Previous … Tudalen 193 Tudalen 194 Tudalen 195 Tudalen 196 Tudalen 197 Tudalen 198 Tudalen 199 Tudalen 200 Tudalen 201 … Next page Next Last page Last
Factors affecting the distribution of Skylarks Alauda arvensis wintering in Britain and Ireland during the early 1980s Author: Published: 2001 01.01.01 Papers
Can the historical CBC trend for skylarks Alauda arvensis be 'recovered' using present-day agricultural habitat preferences and changes in agricultural land-use? Author: Published: 2001 01.01.01 Papers
The decline of the Bullfinch Pyrrhula pyrrhula in Britain: is the mechanism known? Author: Published: 2001 01.01.01 Papers
Aggressive behaviour and correlates of dominance in Purple Sandpipers Calidris maritima at a communal winter roost Author: Published: 2001 01.01.01 Papers
Habitat association of breeding Meadow Pipits Anthus pratensis in the British uplands Author: Published: 2001 01.01.01 Papers Bird Study
Chaffinch Fringilla coelebs foraging patterns, nestling survival and territory distribution on lowland farmland Author: 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: 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 Read Online