Ruby-throated hummingbirds (Archilochus colubris)are tiny birds that grow to lengths of 75mm-90mm (3.0in-3.5in) and weights between 3.4g-3.8g (0.11oz-0.13oz). Both sexes have metallic green feathers on their back and white feathers on their belly. Males have irridescent ruby colored feathers on the throat. Both sexes have a forked tail and a long thin bill (16mm-18mm).
Ruby-throated hummingbirds beat their wings an astonishing 53 beats per second and when they do, they produce a characteristic 'humming' or 'whirring' sound. They are able to hover and even fly backwards (Source: Robinson).
Young ruby-throated hummingbirds are fed insects for protein since nectar is insufficient source of protein for the growing birds. They show a slight preference for red, tubular flowers as a nectar source.
Ruby-throated hummingbirds spend summers in eastern North America (they are the only species of hummingbirds found in that region) and winters in the western Gulf Coast and Central America (Source: Robinson). Their migration route extends over 3000km (1900mi). Some ruby-throated hummingbirds migrate along a coastal route around the Gulf of Mexico while others make a nonstop flight, 850km (530mi) across the waters of the Gulf. Deciduous forests, gardens, orchards, mixed woodlands.