An Osprey in Late October

How late in the fall do Osprey stay around? I had thought they were long gone from our area so I was really surprised this morning to see one along the river. Our river had been extremerly low over the past few months but recent rains have raised the levels a significant amount over the past couple of weeks. I had seen a white spot in a tree on the opposite bank of the river when driving by and turned to investigate it; and I'm so very glad I did. What a great photo opportunity with the fall foilage in the background and this magnificant bird flying by.