Another way of catching crows.
When I was in the brokerage industry I had a client named Dwayne Hanzliceck, he was an ex Marine from WWII who grew up in Missouri. His childhood was spent smack in the middle of the great depression ( 1929 - 1937 ) He and his family lived on a farm. Needless to say, times were tough. However, the county seat was offering a bounty of 10 cents for each pair of crows feet brought in. No one was shooting them in those days because who could afford to be buying ammo just for shooting crows?
Enter Dwayne and his cunning plan. I don't recall how old he was at the time but he said that they went to town once a week for supplies and it was always on a Saturday.
At the grocery store the clerk would package all the dry goods up on a big brown paper parcel and tied it all up with white string. The family always saved the brown paper and all the white string when they unpacked the groceries at home. Everyone did this kind of thing during the depression.
Dwayne made a point of saying that there were very few trees in Missouri at that time so all the fence posts were made of cement. Those cement posts were about 9" diagonally across on the top. Holes were made for the fence wire to go through when they were cast and Dwayne used those fence posts to trap his crows.
Being on a farm there is always hard corn around used for feeding pigs and Dwayne would get a few kernels and using an old fashioned hand drill he would drill a small hole thru each of the kernels just big enough to thread some of that white string he'd salvaged through. Then he'd tie a knot in the string so the string couldn't be pulled back thru the hole. He’d then tie one end to the top strand of wire on the fence while placing the single kernel of corn up on the 9" flat top of the cement post. Then off he'd go to school.
When he returned home in the afternoon he often had as many as 4 dead crows hanging on the fence. The crows would find the corn as there was precious little for them to scavenge during those lean times. They'd peck at it a few times but would be unable to break that hard corn with their beak. Finally, they'd give up and just swallow the kernel.
Crows cannot regurgitate like some other animals so once they swallowed that kernel they were essentially anchored to that fence by the attached white string. Naturally they'd try and fly away but the string put short work to that and by the time Dwayne arrived home from school they'd all be dead. He then clipped off the feet and on the Saturday when the family went to town he would take his crows feet in and collect his bounties.
He said that he and his brother were the only kids in the area who had pocket money to spend during those hard times. He also said that they never divulged their secret to any of the other kids.