Proc. R. Soc. B. 284, 20171735 (Published Online 29 November 2017) (doi:10.1098/rspb.2017.1735)
We have unfortunately discovered errors in the published figures for this paper:
For figure 2, the labels for ‘south polar skua’ and ‘brown skua’ are the wrong way around, the colours should also be switched, and one of the amino acid changes is missing a label (K12E).
For figure 3, one of the alleles for GHR is found in both arctic and long-tailed skuas, but this is not apparent—there should be a yellow pie slice in the orange circle.
These errors have no bearing on the reporting of results, discussion or conclusions of the paper and the text, including figure legends, is unchanged.