Bulwer’s petrel Capture-Mark-Recapture data. Marta Cruz-Flores, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona Roger Pradel, CEFE UMR 5175, CNRS – Université de Montpellier – Université Paul-Valéry Montpellier Joël Bried, Centro Okeanos, MARE (Marine and Environmental Sciences Centre), IMAR and LARSyS associated lab, Universidade dos Açores, Jacob González-Solís, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona Raül Ramos, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona Bulwer’s petrel captures from 2007 to 2018 specifying the reproductive performance/status of the individuals (1=unknown reproductive performance, 2=successful breeder, 3=failure at incubation, 4=failure at chick-rearing, 5=non-breeder and 6=breeder with unknown reproductive performance), their colony (Vila or Montaña Clara) and their sex (0=not sexed, 1=male and 2=female). Data collected from: Vila islet (Azores Islands; 36°55’ N, 25°10’ W) 2007-2012 and 2016 Montaña Clara islet (Canary Islands; 29°18’ N, 13°32’ W) 2010-2018 Dataset under a CC BY-ND license (available at http://creativecommons.org/licenses/by-nd/4.0/)