The bird nest outside our bedroom window had shown a flurry of activity for the past 2 months. 2 birds kept flying in and out, monitoring the nest carefully. Last week, we awoke to very loud chirping, and realized that the baby birds had finally arrived! I even got a picture of them asking for some treats. (You may have to enlarge to get a good look). I've watched the babies' progress for a week, and suddenly they were gone. But they keep returning, as they're still flight novices. So I watch them every once in a while. My wife was asking exactly how birds, shall we say, "mate." Despite my zoo experience, I wasn't exactly sure. So today I went to take a peek at the babies flying about their nest and, let's just say, now I know the answer.