Any birders on the forums? I'm not a birder but I have been hearing a bird around here that I've been trying to identify. As it flies a little above the treetops it makes a sound similar to someone drawing a bow across a hand saw while wobbling the saw rapidly as in whoop...whoop...whoop...whoop... It's not a very large bird, maybe about the size of a robin but I've never been able to see it come to land so I can't describe its color.