The sound reminded me of home where we used to have a massive Sugar Maple tree in our front yard with my room in an earshot of the birds singing in the morning. The coo offers calm, much more pleasant than the obnoxious crow calls or god for bid- dog barking that early in the am!
A friend once recommended a book called 'The Pigeon' about a Security Guard. A very unruffled read, if you will. I liked it.
