I have shot hundreds upon hundreds of crows while growing up. The best set ups you can have are in thick timber that doesn't have a high canopy or in a pine forest. All you need to do is set up in an area with an opening so you can shoot well. Sometimes they are hard to find but they usually are there somewhere. Just turn in the caller and they will come in low right over the canopy and smoke them when they get in the clearing. They will keep coming all day long. Pines are by far the best for shooting them. I have tried about everything and that has worked everytime. Also don't let the caller run continually, I usually shut it off after a volley of shooting until I hear crows again calling. Or if you can set up where you can see a long ways, i only turn it on if I see a crow. It seems to work much better then letting it run for hours continuously, goodluck