Internal biological clocks can't keep up with climate change
One of the papers, "Timing avian long-distance migration: from internal clock mechanisms to global flights" describes the problems that migrating birds face when temperatures rise - many birds arrive to their breeding and winter quarters at a time which is not optimal for feeding. Read more at http://www.biology.lu.se/article/climate-change-causes-late-arrival!
Also the science news on Swedish national radio reported on this. Listen to it here! (at 2:12)
The second review article, "Methods in field chronobiology", describes different methods that can be used to study chronobiology in nature.