200 dead crows were found near Vancouver, and there was concern that they may have died from Wuhan Flu.
A bird pathologist examined the remains of all the crows, and he confirmed the problem was definitely NOT Covid 19, to everyone’s relief.
However, he determined that 98% of the crows had been killed by impact with trucks, while only 2% were killed by car impact.
An ornithological behaviourist was hired to determine the disproportionate percentages for truck versus car kill.
The ornithological behaviourist quickly determined the cause.
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 the lookout crow could say “cahâ€, but he could not say “truck.â€
https://www.sciencealert.com/new-research-finds-crows-can-ponder-their-own-knowledge