200 dead crows found along the highway in California. The fear of avian flu was dismissed. The testing revealed the cause of death to be vehicular impact. Of the 200 killed, 195 were hit by trucks only 5 by cars. When crows eat road kill, they post a crow in a tree nearby to warn the others of approaching danger. It turns out the lookout crow can say "cah' but he can't say "truck"