I found such a photo on the Internet and became interested in what function such a structure could perform.
this post was submitted on 29 Nov 2023
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These are great for wildlife as they provide a safe crossing over high-speed highways. They are usually design to be in already existing migration paths where moving a proposed highway may not work and not disrupting migration paths is of importance.
Looks like a nice choke point for a predator to hang about.
Are there any predators smart enough to strategize like this? I know that some use water holes as hunting grounds, but that's probably more instinctive than actual strategy.
Would they need to be that smart? Ambush predators that stay in roughly one area, for example, could naturally grow their numbers in the area around such a chokepoint simply by virtue of the ones in that area having more food available and therefore better survival chances.
I think that these human-made structures provide such a different environment (loud sounds from cars, moving/flashing lights etc.) that previous instinctual adaptations wouldn't trigger.