Detailed text transcripts for TV channel - DW - 20181001:08:52:00
Holding hands so they don't drift away in the river but just scientists have been watching them. through. a camera trap took this footage of an alternate they are river in switzerland. with the rest of the family. it takes resources and time to capture such images it's hardly feasible to set up traps across large areas. but there are other ways to find out where i often saw. conservationists of set up a project to monitor the animals here in central switzerland it's headed by every new vine backa bit trist paris photo is one of thirty six volunteers involved in the effort. pulses leave traces ...