Ponchon, A.Gremillet, D.Christensen-Dalsgaard, S.Erikstad, K. E.Barrett, R. T.Reiertsen, T. K.McCoy, K. D.Tveraa, T.Boulinier, T.2019-02-272019-02-272014-01Ponchon, A, Gremillet, D, Christensen-Dalsgaard, S, Erikstad, K E, Barrett, R T, Reiertsen, T K, McCoy, K D, Tveraa, T & Boulinier, T 2014, 'When things go wrong : intra-season dynamics of breeding failure in a seabird', Ecosphere, vol. 5, no. 1, 4, pp. 1-19. https://doi.org/10.1890/ES13-00233.12150-8925ORCID: /0000-0002-5126-6269/work/54681100http://hdl.handle.net/2164/11969We thank all fieldworkers who helped monitor nests and deploy/retrieve GPS loggers, notably Muriel Dietrich, Elisa Lobato, Julien Gasparini, Vincent Staszewski and Thierry Chambert. We are grateful to Victor Garcia‐Mattarranz from the Ministerio de Medio Ambiente y Medio Rural y Marino (MARM, Spain) and Jacob Gonzalès‐Solís from University of Barcelona for their help on PTTs functioning and deployment. We thank Nina Dehnhard and two anonymous referees who provided useful comments and suggestions to improve this manuscript and Matthieu Authier for statistical advice. This study was funded by the French Polar Institute (IPEV, programme n°333 PARASITO‐ARCTIQUE), CNRS, ANR, OSU OREME, NINA, University of Tromsø, SEAPOP (www.seapop.no) and CEDREN. All work was carried out in accordance with standard animal care protocols and approved by the Ethical Committee of the French Polar Institute and the Norwegian Animal Research Authority. The PhD thesis of A. P. is partly funded via a Région Languedoc‐Roussillon program ‘Chercheur d'Avenir' support to T. B. and University of Montpellier 2.191739413engbreeding successenergetic trade-offenvironmental changefood availabilityGPS and satellite trackingmaximum working capacityreproductive costsRissa tridactylaQH301 BiologyQH301Journal article10.1890/ES13-00233.151