Why did the chicken cross the road?
We may never know, since she probably never got to the other side.
In the US alone, about a million animals are flattened by passing motorists each day — and that doesn't even count all the bugs!
Animals are constantly confronted with barriers, some of them that are completely natural, and others that we build that are barely barriers at all.
As we build our own infrastructure, we're also adding to this obstacle course without meaning to, and these unintentional fences are some of the most effective animal barriers out there.
Roads are just the beginning.
Take high-tension power lines, for example.
They may look harmless to us, but many other creatures steer clear.
We can't say why for sure, but these animals' ultraviolet vision may mean that the UV flashes discharging from the cables make for a very scary sight.
And even weirder stuff can get in animals' way.
