Monitoring also shows that different species have different preferences: grizzly bears, deer, moose, and elk favour the open air of the overpasses, while cougars and black bears prefer the cozy coverage the tunnels provide.
The crossings also help maintain genetic diversity in wildlife populations, reconnecting the habitat on either side of the highway and allowing the different groups of the same species to interact.
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Parks Canada has some YouTube videos from trail cameras they installed in order to see what wildlife actually uses these and how quickly they started using them once construction was complete. Pretty neat to watch.
I’d look up links but I’m on mobile and lazy…
The article doesn’t state how big the “area” is, but the employ fences along the sides for quite a ways in order to make it hard for animals to just get on the highways, and that while the 80% is overall, it states that deer and elk collisions went all the way down to 96% less.
I always wondered, why don’t they just move the deer crossing signs to less trafficky areas that are safer for them to cross?
Isn’t this usual? We have these every 20km here in Dalmatia.
There is a great book about these called Crossings:
I did not know that there were tunnels underneath as well. Are the tunnels at all of the crossings? I know they are just finishing a new one a bit west of calgary.
