I don’t think that direction has that much to do with it. They commonly fly north to roost here. Flying straight across a river and back south when they decide to come this way. You might see them for a week straight or you might not see a single bird for a week or longer. They don’t appear to have any sort of pattern right now. I can see up to 30 birds or just a lone hen or Tom.. I have no idea why they are being so strange right now. I do know if it’s windy out the whole flock will sit on the bank to wait for the break in the wind and take off flying across together. I have watched them quite often even saw a flock of 11 birds doing it this evening..