Not exactly sure how. But about 10 years ago there were no turkeys on the property I hunt. I set a corn feeder in an area I wanted to use as a deer sanctuary. About 2 years later I got a pic of one hen. Then a tom. Then a few more hens. Two springs ago or about 6 years after putting out the feeder I had about 30 turkeys at the feeder in the spring and each spring since they seem to be growing in number.