During the winter turkeys will group up into flocks, so even though you see flocks of a hundred birds doesn't mean they will be like that in the spring. Not saying there won't be any birds there, more than likely there will be, but just not flocked together like that. One of the tactics to spring hunting is to find a roosted tom, set up w/in a hundred yards or so, and come sunup, start calling after the bird has touched the ground and wants to gather the hens he roosted with. I don't know about shooting a roosted bird being illegal, but I would compare it to shooting a duck after it has landed in your decoys. I know here you can shoot them out of the roost, but why? Takes the fun out of the whole turkey experience. There is nothing like bringing in a tom to your call - the closer the better.
You can use decoys - a couple of hens and a jake is a typical setup. They say it gives the tom something to focus on other than you. However, they are by no means a requirement. I have yet to shoot a bird with decoys set up. That isn't to say that every year I'll put them out because I hear stories of a big ol' tom stomping a jake decoy into the ground and I would love to see something like that. Good luck on your draw.
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