Apparently a bunch of crows have been dying lately. One ornithologist linked their deaths to vehicles, whether it's them running into the vehicle, or the crows not moving out of the way.
An ornithologist for one university actually took it further, he wanted to know whether the majority of deaths were caused by trucks or by cars. The research showed that about 95% of the deaths were caused by trucks and 5% were by cars.
The study showed that most drivers in cars were actually able to avoid the crows, while trucks had trouble doing so. This is because crows at the last second were able to yell out "Cah Cah" but no crow could yell out "Truck"