It's been a crazy year here in cental Ohio. Not sure if it is over or just starting. If it is just starting it's going to be a short season. Went out on 4/18/15 and the woods looked ready. Found nothing. Went out on 5/3/15 and found s couple dozen small ones and 3 large ones. Went out at lunch today 5/6/15 and bagged a dozen nice ones.
Good luck up north Hobler. Overall ours didn't come up until the woodland perennials were up and tall, trees have buds and leaves. Looks like summer here not spring and overall they are just now coming up in my area. However, some have been finding them by the 100's only 15 miles away from me East, West and South.