I am evolutionary biologist conducting research primarily on social selection (including sexual selection). I have worked mainly on birds, fishes, insects, and mammals (including humans), but I am a naturalist at heart and usually choose study species that I think will best answer the questions that interest me.

I am currently working on a study of sex ratio and the evolution of body size on Gray-crowned Rosy Finches on St Paul Island, Alaska, and a study of dawn choruses in birds at several sites in France, Canada, the United States and Australia.

I also study the history of ornithology, and maintain a website on that topic for the American Ornithological Society. I maintain a different website for a book on the recent history of ornithology that I wrote with Tim Birkhead and Jo Wimpenny in 2014.

I retired from my faculty position at the end of 2019. I am now Emeritus Professor and am devoting full-time to my own research and writing. I will no longer be supervising graduate students except possibly as cosupervisor with one of my colleague-collaborators (Drs Paul Martin, Fran Bonier, Steve Lougheed, or Adam Chippindale). If you are interested in working with me please write to one of those people first.

I don’t update this website more than once a year so if you are interested in my recent thoughts, ideas and photos follow me on Twitter at the links to the right.

If you are interested in the header photos see here.