Biol. Lett. 7, 608–610 (23 August 2011; Published online 9 February 2011) (doi:10.1098/rsbl.2010.1204)
Subsequent to publication of ‘Stress associated with group living in a long-lived bird, Biol. Lett. 7, 608–610 (23 August 2011; Published online 9 February 2011, doi:10.1098/rsbl.2010.1204)’, the journal received an expression of concern from the authors (Nuria Selva, Ainara Cortés-Avizanda, Guillermo Blanco, Thomas Mueller, Bernd Heinrich and José A. Donázar) about the validity of some of the data based on laboratory analyses carried out by Jesús A. Lemus. While awaiting the outcome of further investigations, the Editor-in-Chief and the authors wish to notify readers of our concerns regarding this article.
Nuria Selva
Institute of Nature Conservation, Polish Academy of Sciences, Mickiewicza 33, 31120 Kraków, Poland, nuriselva@gmail.com
Ainara Cortés-Avizanda
Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas, Américo Vespucio s/n, 41092 Sevilla, Spain, ainara@ebd.csic.es
Guillermo Blanco
Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, J. Gutiérrez Abascal 2, 28006 Madrid, Spain, gublanco@hotmail.com
Thomas Mueller
Department of Biology, University of Maryland, College Park, MD 20742, USA, muellert@gmail.com
Benrd Heinrich
Department of Biology, University of Vermont, Burlington, VT 05465, USA, bheinric@uvm.edu
José A. Donázar
Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas, Américo Vespucio s/n, 41092 Sevilla, Spain, donazar@ebd.csic.es
Prof. Brian Charlesworth FRS
Editor-in-Chief, Biology Letters