Osprey Spring, that cold, wet joke played on us Cape and Islands folk, begins in less than two weeks. Though it has felt pretty wintry recently, we’ve already ticked off several of our “spring can’t be far away” bird migration milestones. The first Killdeer, those large plovers that nest in grassy and gravelly places, were reported weeks ago - I saw five loudly interacting at the Chatham airport last week. Red-winged Blackbirds are now back in certain swamps and marshes, males loudly proclaiming their territories. Here on the Outer Cape, a few Turkey Vultures are back and fighting wi...