Blackcap birds that breed in Central Europe in the summer traditionally fly to Spain for the winter. But in the past 50 years, some have started wintering in Britain, lured by seed and suet in bird feeders. Significantly, the birds tend to mate with others that wintered in the same area. Now researchers from Germany and elsewhere have observed that the two blackcap groups differ in wing shape, beak width and feather color—evidence of evolution in action.
Learn more about the blackcap at the Encyclopedia of Life.
Have you ever wondered how a simple shot can keep you from dying a horrible death? In this one-minute video, Ask Smithsonian’s host, Eric Schulze, unravels how vaccines boot-camp our bodies into shape, getting us ready to fight off deadly diseases
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