St John Glew, KatieWanless, SarahHarris, Michael PDaunt, FrancisErikstad, Kjell EinarStrøm, HallvardSpeakman, John RKürten, BenjaminTrueman, Clive N2020-01-092020-01-092019-11-01St John Glew, K, Wanless, S, Harris, M P, Daunt, F, Erikstad, K E, Strøm, H, Speakman, J R, Kürten, B & Trueman, C N 2019, 'Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea', Movement Ecology, vol. 7, 33. https://doi.org/10.1186/s40462-019-0174-42051-3933PubMedCentral: PMC6824136https://hdl.handle.net/2164/13487Acknowledgements We thank Scottish Natural Heritage for permission to work on the Isle of May National Nature Reserve, Carrie Gunn and Mark Newell for help with data collection, Stephen Freeman and Kate Searle for help with analysis of survival data. We thank R McGill and J Newton for help with stable isotope analysis at the NERC Life Sciences Mass Spectrometry Facility node East Kilbride (UK). We are grateful to B Harley (Cefas) for collection of pipefish for isotopic analyses. We thank U Struck and M Falk for SIA at the Leibniz Institute for Research on Evolution and Biodiversity (Berlin, FRG). We also thank Kirsteen MacKenzie and Cefas for the sample collection and initial North Sea isoscape construction. Peter Thompson and Paula Redman provided valuable technical assistance in isotope analysis. Funding K.S.G is jointly funded through the SPITFIRE Natural Environment Research Council (NERC) DTP partnership (grant number 1498919) and Southampton Marine and Maritime Institute (SMMI). This work was also supported by NERC funding for UK National Capability including award number NE/R016429/1 as part of the UK-SCaPE programme, the NERC/Department for Environment, Food and Rural Affairs (DEFRA) Marine Ecosystems Research Programme (award number NE/L003082/1), SEATRACK (http://www.seapop.no/en/seatrack/) and the Joint Nature Conservation Committee (JNCC).. BK was supported by the EURopean network of excellence for OCean Ecosystems ANalysiS (EUROCEANS), the Department for Environment, Food and Rural Affairs (DEFRA, UK, contract ME3205), and through baseline funds of BH Jones (KAUST) during the writing phase of this manuscript. We thank the Scottish Universities Environmental Research Centre (SUERC) for funding of stable isotope analysis at the NERC Life Sciences Mass Spectrometry Facility node East Kilbride (UK). Contributions KSG, CNT, SW and MPH conceived the project. SW, MPH, FD, KEE, HS, JRS and BK planned and undertook the fieldwork. KSG carried out the sample and data analysis and wrote the manuscript. All authors provided editorial advice. All authors read and approved the final manuscript.1411415893engSDG 14 - Life Below WaterFratercula arcticaIsoscapeAlca tordaMarine spatial managementSpatial ecologySeabird foraging behaviourNorth SeaTrophic ecologyMoultQH301 BiologyNatural Environment Research Council (NERC)1498919SPITFIRE Natural Environment Research Council (NERC) DTP partnershipNERC funding for UK National CapabilityNE/R016429/1UK-SCaPENE/L003082/1QH301Journal article10.1186/s40462-019-0174-4