Ancient origins and multiple appearances of carotenoid-pigmented feathers in birdsDOI: info:10.1098/rspb.2014.0806v. 281No. 1788The Royal Society
Thomas, Daniel B., McGraw, Kevin J., Butler, Michael W., Carrano, Matthew T., Madden, Odile, and James, Helen F. 2014. "Ancient origins and multiple appearances of carotenoid-pigmented feathers in birds." Proceedings of the Royal Society B: Biological Sciences, 281, (1788). https://doi.org/10.1098/rspb.2014.0806.