Calling birds
For anyone trying to figure out what bird you are listening to, there is a simple way to call them in during the spring and early summer. Most warblers will respond to it, chickadees and nuthatches do as well, but thrushes tend not to as well. There are two ways to call. The first is to make a loud "pshhh, pshhh, pshhh" or "psss psss psss." It is called "pishing," in birder-speak. The second way is to hold the palm of your hand up to your mouth and kiss it loudly, repeatedly. It comes out sounding like a bird's alarm call. Calling birds in to identify them works best when you have one or two birds and you know where they are sitting but you just can't see them; that way when you see it you know it was the one you were hearing. It is also fun when you hear a bunch of birds singing, because you can bring in a whole host of different species at once. They will stop singing and either be silent or make alarm calls when they fly in, but they will often come close enough to see without binoculars. If you don't have a bird book with you or don't know your birds well, make quick note of obvious features like back, belly and throat color, presence of wing bars, and so forth, so you can remember them when you get back home to your bird book. Once they have flown in, they don't stick around long, so make your observations quickly. You could try it this time of year - sometimes it works with some species (WTSP is a good responder to the call), but your best bet is to try it out next May and early June.