Detailed text transcripts for TV channel - DW - 20190429:07:33:00
A champion flyer the other one overtakes her which means. you have bears mirabelle authority mediocre a flying doesn't matter much in everyday life but when they migrated she struggled to keep up with the others. mirabelle flaps her wings a lot while the other one coast smoothly. partner says was that the good flyers who travel fast head for africa and the slower ones who flop a lot only make it to spain. data from the accelerometers let the researches know if the stalks are gliding or flapping. it takes a lot of energy to flap the wings gliding is pretty much effortless. but that's only an op...