A lot of wild animals get hit/run over trying to cross the Trans Canada highway in Banff National Park every year. They tried to help solve the problem by building overpasses for the animals to use to cross the road. Studies have shown that there are in fact some animals using these things, but I've always wondered how that works exactly.
How are these animals finding the overpass? Like did they leave scent trails or special animal signs along the edge of the forest leading to the overpass? Do the animals have monthly meetings and someone said, "did you guys know there's like a couple of bridges over that highway thingy?" How long will it take before predator animals figure out that they can just hide near one side of an overpass and wait for their next meal to show up?
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