Over 200 dead crows were found along a stretch of a local highway this past week and there was concern that it might have been Covid-19 was the cause. Several of the dead crows were examined at a local university and it was found that Covid-19 wasn't the problem.
The problem turned out to be impacts with vehicles. Different colors of paint were found on the beaks and claws of the dead crows. Checking the paint found that 98% of the crows were killed by trucks and the other 2% were killed by cars.
So a bird specialist was hired to find the reason for this outcome. The specialist found that while crows always have a lookout while eating roadkill , everyone of them could say " caw , caw " but not one of them could say " truck , truck , " .