A meta-analysis I was involved in has just come out online in Behavioral Ecology this week. This one was led by Fhionna Moore from the University of Dundee, with a bit of help from me and Dave along the way. In it we tested whether physiological stress influences the strength of sexual signals across a range of vertebrate species, and show surprisingly that no, the relationship is basically zero. You can read all about it here.
The paper has been accepted as an invited review, which means it is open access. There will also be several invited commentaries published online in the near future so look out for those.