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22 Interesting Facts About Ruby-Throated Hummingbirds

Ruby-throated hummingbirds are tiny, fast-flying birds that are commonly seen throughout the eastern United States during the warm weather months. They have many unique characteristics that help them thrive in their range. Keep reading for 22 fun facts about the Ruby-throated hummingbird!

Facts About Ruby-throated Hummingbirds

1. Ruby-throated Hummingbirds Beat Their Wings Extremely Fast

Ruby-throated hummingbirds are very fast flyers and have the ability to zip from flower to flower at high speeds. These hummingbirds are capable of beating their wings as much as 50 times per second.

2. Males and Females have different colored throats

The name of the Ruby-throated hummingbird stems from the appearance of the male. Males of the species have a bright red throat, while females have white colored throats.

3. Ruby-throated Hummingbird have iridescent feathers

Ruby-throated hummingbirds are easily recognizable by their shiny feathers that have a reflective, iridescent sheen, especially in sunlight. Their head, back and tail are covered in shiny emerald green feathers. Because of this iridescence, in certain light both their green body feathers or red throat feathers may appear black.

Female Ruby-Throated Hummingbird (

4. Ruby-throated hummingbirds don’t sing, but they do make sounds

Although you won’t see them sitting on a branch and singing like your backyard songbirds, they do make sounds. Their calls sound like high pitched squeaks. You will often hear many of these squeaks and squeals as they chase each other.

5. Ruby-throated Hummingbirds Are Common Backyard Visitors

Not all hummingbirds are comfortable visiting backyards, but ruby’s seem right at home. If you have a garden or your backyard has many flowers, these hummingbirds will be frequent visitors. They will also happily approach hummingbird feeders for food.

6. Ruby-throated Hummingbird Nests Can Expand

When constructing the small cup-shaped nest out of plant materials and spider silk, the mother hummingbird keeps it pliable. She will stomp down the base, but leave the walls of the nest slightly flexible. This will allow the nest to stretch as the baby hummingbirds grow.

Ruby-throated hummingbird building her nest | image by Lorie Shaull via Flickr | CC BY 2.0

7. Ruby-throated Hummingbirds Love Tubular Flowers

Ruby-throated hummingbirds favor tubular flowers because of the great amount of nectar the flowers produce. Bees are unable to reach the nectar and pollen within tubular flowers, which allows hummingbirds to feed on these flowers without having to compete with bees.

8.  Ruby-throated hummingbirds are migratory

Once fall approaches, Ruby-throated hummingbirds begin to migrate south to lower Mexico and Central America where they will spend the winter. At the start of spring, they make their way back up north to the United States and Canada to prepare for breeding season. Many people eagerly await their return, which begins in southern states as early as March and April.

9. During migration ruby-throated hummingbirds can travel 500 miles at a time.

Many Ruby-throated hummingbirds choose to travel across the Gulf of Mexico during their migration. They can make this flight of about 500 miles in less than a day without stopping. 

The Ruby-Throated, common visitor of eastern North America. (Image credit: birdfeederhub)

10. Ruby-throated Hummingbirds Use Their Tongue to Drink Nectar Rapidly

A hummingbird tongue is approximately the same length as their beak. When Ruby-throated hummingbirds stick their beak down into flowers, they are using their long tongues to reach the nectar that sits at the bottom.

11. Ruby-throated Hummingbirds Wrap Their Nests in Spider silk

Female Ruby-throated hummingbirds will use the silk from spider webs to keep the nest together. Once the nest is complete, leaves and lichen are used to camouflage the nest from potential predators. Leaving spiderwebs in your yard can actually help hummingbirds by providing material for their nests!

12. Red and Orange Flowers Attract Ruby-throated Hummingbirds

Hummingbirds are able to identify certain colors, including red and orange. Although Ruby-throated hummingbirds are attracted to red and orange flowers, researchers have confirmed that the choice of flower by color is based on the amount of nectar certain colored flowers possess. This is why many hummingbird feeders are red.

13. Ruby-throated Hummingbirds Live in the Eastern U.S.

There are several common hummingbird species that spend their summers in the United States. However, the Ruby-throated hummingbird is the only hummingbird species that breeds in the eastern half of the United States. They are the most prominent hummingbird species east of the Mississippi River.

14. Ruby-throated Hummingbirds Are Efficient Pollinators

Pollen is very important for flower reproduction. Similar to bees, hummingbirds are excellent pollinators. As the hummingbird travels from flower to flower to feed on nectar, they pick up pollen with their feathers in the process. By moving flower to flower, they transport this pollen and can pollinate hundreds of flowers a day.

15. Female Ruby-throated Hummingbirds May Build a Second Nest While Still Feeding Young

Female Ruby-throated hummingbirds typically have one to two broods each year. If a female has a second brood, she will often begin building a second nest to lay another clutch of eggs while she is still feeding nestlings from the previous brood. No time to waste when making sure they can raise their young to independence before it is time to migrate in the early fall.

16. Ruby-throated Hummingbirds Are Protected by the Migratory Bird Treaty Act

In 1918, the Migratory Bird Treaty Act was established to protect migratory bird species. The act applies to all migratory bird species that are native to the United States and its territories. This prohibits the capture, selling, trade, transport, or killing of the Ruby-throated hummingbird, which is enforced by the Department of Interior U.S. Fish and Wildlife Service.  

Female Ruby-throated hummingbird at our feeder | image:

17. Males don’t pair up with females for very long

Males spend a lot of time on their own, defending their territory and favorite feeding spots. They only pair up with females during courtship and mating, which lasts for just a few days or a few weeks. After mating they are off on their own again, leaving the female to nest, incubate the eggs and raise the young all on her own.

18. Ruby-throated Hummingbirds are territorial

When a Ruby-throated hummingbird finds a habitat to settle in, they will claim it as their own. When other hummingbirds, small birds or even insects enter the area, Ruby-throated hummingbirds will play defense and try to chase the intruder away. This is seen more in the males but females may engage in this also, especially to defend a nest area.  

19. Ruby-throated Hummingbirds Eat More Than Just Nectar

Much of the adult Ruby-throated hummingbird diet consists of not only nectar, but also small insects. Mosquitos, gnats and fruit flies are some of the insects on the menu. Insects are also fed to baby hummingbirds. The protein and vitamins they provide help young hummingbirds grow quickly.

20. Ruby-throated Hummingbird Eggs Weigh Less Than a Gram

Ruby-throated Hummingbird eggs are only about 0.5 inches (1.2 cm) in length and 0.3 inches (0.8 cm) wide. Their eggs are all white and only weigh about half a gram.

21. Males perform a courtship display for females

During the courtship process, males will perform a special dive for females that enter their area. They will fly up above the female, sometimes as high as 50 feet, then dive down and back up in a large U-shape. They will perform several U-shaped dives as the females watch. If she seems interested, he may fly up close to her and flit from side to side while displaying his red throat. 

22. Ruby-throated hummingbirds can’t walk

The legs of the ruby-throated hummingbird are so short that they can’t walk or hop around. When not in flight, they can use their strong feet to grip branches and sit perched.