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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Accelerated speciation in colour-polymorphic birds (1 Viewer)

Origins of carotenoid-pigmented feathers

Thomas, McGraw, Butler, Carrano, Madden & James 2014. Ancient origins and multiple appearances of carotenoid-pigmented feathers in birds. Proc R Soc B 281(1788): 20140806. [abstract]
Gouldian Finch

Kokko, Griffith & Pryke 2014. The hawk–dove game in a sexually reproducing species explains a colourful polymorphism of an endangered bird. Proc R Soc B 281(1793): 20141794. [abstract]
Very interesting, Richard! Games as a way of modelling biology has been a bit of a hobby of mine (and I'm very familiar with the Hawk-Dove game used here) so it's very nice to see some research that supports this kind of modelling.

I think this is probably the correct thread for this post. In the November issue of The American Naturalist there is a paper on sexual selection of dichromatism and diversification.

Huang and Rabosky. 2014. Sexual Selection and Diversification: Reexamining the Correlation between Dichromatism and Speciation Rate in Birds. The American Naturalist Vol. 184, No. 5, pgs E101-E114.

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