I've used crow calls but only to tee off turkeys in the morning. They hate them with a passion. I wouldn't say I've actually hunted them persay but we would more or less shoot them off power lines with .22's. I guess that would be crow killing. We would also shoot starlings for community service work.
You believe that there is one God. Good! Even the demons believe—and shudder. James 2:19
"I do not fear the man that practices ten thousand kicks one time, I fear the man that practices one kick ten thousand times." Bruce Lee