Gather up a few tools and supplies before starting. If you're attaching faux flowers, PVA (polyvinyl acetate) glue is considered safe for use around animals. For replacement feeders, you'll just need ...

A robot hummingbird is the military's latest flying spy machine, with a camera affixed to a featherweight 6.5-inch body that flies by flapping its wings. The "Nano Hummingbird" can fly just 11 miles ...