Me and a buddy were out hunting and we seen a tree about 300 yds away that was like that. Totally covered with crows. We managed to call some of them our way and shoot about 5 of them. I dont know how they ever heard my calling over themselves. Its about time to start cleaning out the starrlings where I work. THey make nests in anything they can and shit all over. I had a couple make a nest in my gas grill last summer, and underneath the lid on my LP tank. they only did it once.