We have great flocks of crows here in Geneva, at dusk they fly in from all areas and roost in the trees along the lake making a great racket and creeping you out if you happen to be walking by and they all take flight in the dark. They used to land in the trees in town around the houses making a horrible racket but now they have moved down to the lake leaving everyone alone. It is interesting to see them first thing in the morning flying down the lake in search of whatever they search for, food most likely. I see them when I am taking the dogs out, they look like an army going out for battle. I'm telling you they are creepy, but they will be gone to other parts in the spring, they only like to stay here for the winter, which is odd since most of us would like to leave here for the winter.