I heard that they found about 200 dead crows near Boston, MA. and there was concern that they may have died from Avian Flu.
They had a Bird Pathologist examine the remains of all the crows, & he confirmed the problem was definitely NOT Avian Flu, to everyone's relief.
However, he determined that 98% of the crows had been killed by impact with trucks, & only 2% were killed by an impact with a car. Boston then hired an Ornithological Behaviorist to determine the disproportionate percentages for truck-versus-car kill.
The Ornithological Behaviorist determined the cause in short order. When crows eat road kill, they always set-up a look-out Crow in a nearby tree to warn of impending danger.
His conclusion was that all the lookout crows could say "Cah", but none could say "Truck."
Insert rimshot here...
That is all.