This Watch's Tiny Tweeting Bird Is a Miniature Mechanical Marvel

To celebrate the 275th anniversary of clockmaker Pierre Jaquet Droz opening his first workshop, the company that bears his name—even to this day—has created a fantastic timepiece that uses tiny piston-powered bellows to produce a realistic chirping bird sound. But watches have been doing that for years. What's … » 8/19/13 9:29am 8/19/13 9:29am