This is a pretty cool video from Parks Canada, which shows how wildlife crossing structures and highway fencing in Banff National Park have reduced large animal deaths by more than 80%.
As you travel through Banff, animals are traveling as well - over your roof and under your wheels. So which animals adopted these crossing structures first? Which animals prefers overpasses versus underpasses? This video captures five years of wildlife movement through the lens of a remote camera in Banff National Park, and provides some interesting insights on how these structures have saved the lives of both animals and humans:
You can learn more about this project here and here.