The city of Boston has a problem with crows. They are dying by the thousands and the roadways are littered with the carcasses. The problem is only getting worse. Massachusetts' Dept. of Environmental Protection just completed a study of the problem. The crows are being killed when they are struck by trucks, but they manage to avoid being hit by passenger cars. Since crows are scavengers they eat roadkill and are often in large groups on the roads. Being social animals, they are somewhat organized and one or two birds always serve as lookouts to warn the others of danger. The MDEP found that the problem is that although all the Bostonian crows can call out "cah!" none of them can call out "truck!"
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