Scientists have converted a children's "drinking bird" toy into a tool that generates usable amounts of electricity. The generator could one day be utilized to power a wide variety of small electronic devices, both indoors and outside.First of all, just how does an unmodified drinking bird (aka dipping bird) work?Well, its vacuum-sealed body consists of two glass bulbs linked by a glass tube, one bulb forming the head and the other one forming the tail. The head bulb incorporates a protruding be...