Back in my younger and stupider days a neighboring farmer asked my friend Tony and I to help him shoot some of the crows on his farm. There was a road through the fields that we would go down to go fishing and the crows would be in the fields watching us. We only had 22s without scopes and 12 ga. shotguns. We managed to shoot a few with the 22s before they got wary of us carrying rifles. We could walk within 50 feet of them carrying a fishing pole, but with a rifle in hand they would take off before we got within 100 yards of them. You could drive down the road and they would just watch you go by. So... Tony came up with a plan. I would drive his blue 58 Chevy while he laid in the back seat with the windows down and the shotgun. When I was passing by the crows I would let him know and he would stick the barrel out the window and shoot. That work a few times and but then when we turned down the road with that car they would take off. So... we borrowed his brothers yellow 59 Ford and got a few more before they wised up to that trick.
You must have heard of this study:
Researchers for the Massachusetts Turnpike Authority found over 200 dead crows near greater Boston recently, and there was concern that they may have died from Avian Flu. A Bird Pathologist examined the remains of all the crows, and, to everyone's relief, confirmed the problem was definitely NOT Avian Flu. The cause of death appeared to be vehicular impacts.
However, during the detailed analysis it was noted that varying colors of paints appeared on the bird's beaks and claws. By analyzing these paint residues it was determined that 98% of the crows had been killed by impact with trucks, while only 2% were killed by an impact with a car.
MTA then hired an Ornithological Behaviorist to determine if there was a cause for the disproportionate percentages of truck kills versus car kills.
The Ornithological Behaviorist very quickly concluded the cause: when crows eat road kill, they always have a look-out crow in a nearby tree to warn of impending danger.
The scientific conclusion was that while all the lookout crows could say "Cah", none could say "Truck."