The male ruby-throated hummingbird does indeed have a striking red throat, though the female of the species does not.
You would have to look quickly to see either, however, as these speedy little birds can beat their wings 53 times a second and fly in an acrobatic style matched by few other birds. They hover often, and also fly upside down and backwards. These hummingbirds have extremely short legs, so they cannot walk or even hop with any efficiency.
Ruby-throated hummingbirds live in woodland areas, but also frequent gardens where flowering plants are plentiful. They hover to feed on flowers, nectar, and sap. During this floral feeding process, the birds pollinate many plants.
These tiny birds are omnivores, sometimes feeding on insects