About the Authors

Beatrix Agnvall

Affiliation IFM Biology, Division of Zoology, Avian Behavioural Genomics and Physiology Group Linköping University, Linköping, Sweden

Markus Jöngren

Affiliation IFM Biology, Division of Zoology, Avian Behavioural Genomics and Physiology Group Linköping University, Linköping, Sweden

Erling Strandberg

Affiliation Department of Animal Breeding and Genetics, Swedish University of Agricultural, Sciences, Uppsala, Sweden

Per Jensen

perje@ifm.liu.se

Affiliation IFM Biology, Division of Zoology, Avian Behavioural Genomics and Physiology Group Linköping University, Linköping, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BA PJ MJ. Performed the experiments: BA MJ. Analyzed the data: BA PJ ES. Wrote the paper: BA PJ ES.