Hummingbird Feeders. Hummingbirds get the energy they need to maintain their astonishing metabolism primarily from flower nectar and the sugar water they find at feeders (here's the recipe). Think of them as miniature flycatchers, and sugar is just the fuel for getting their real nourishment.
afÂ·terÂ·imÂ·age. n. A visual image that persists after the visual stimulus causing it has ceased to act. Also called photogene. (ËÉËftÉrËÉªmÉªdÊ).
Videonystagmography (VNG) is a technology for testing inner ear and central motor functions, a process known as vestibular assessment.It involves the use of infrared goggles to trace eye movements during visual stimulation and positional changes.ideonystagmography (VNG) is a technology for testing inner ear and central motor functions, a process known as vestibular assessment.