Advances in live data logging show how birds do it: get from here to there. Some surprises were uncovered in recent experiments.
They reason backwards: Birds evolved, therefore some poorly understood mindless processes must have driven them to evolve.
News from Princeton discusses the work of Tom Smith and Bridgett vonHoldt, who have solved a “long-standing finch beak mystery.” The answer turned out to be Mendelian, not Darwinian.
Living things are on the move everywhere. Why do some of them go to great lengths to migrate, while others stay put?