Cranes!

While walking along the river, I went farther than I usually do.  In a tree up ahead, I saw a lot of white things.  I had no idea what they were.  As I was watching and wondering, one of those white things started to move--and then it flew away!  It was quite large.  I got as close as I could--the trees were on the other side of several streets--and took some pictures, zooming in on them  I'm surprised the pics turned out as well as they did!    At one point, I counted 25 of them!  I've never seen cranes before, and here I see 25 at one time!