# Ruby-throated Hummingbird (*Archilochus colubris*)

> The ruby-throated hummingbird (Archilochus colubris) is a tiny nectar-feeding bird of eastern North America, weighing just 2 to 6 grams, about the same as a penny. It can hover in mid-air and even fly backwards, beating its wings roughly 50 times a second and reaching speeds of 50 km/h (30 mph). Males show a brilliant red throat, and these little birds typically live 3 to 5 years.

- **Category:** Bird
- **Conservation status (IUCN):** Least Concern
- **Range:** Breeds across eastern North America and migrates to Central America for winter.
- **Canonical page:** https://globalanimalguide.org/animals/hummingbird/
- **Last reviewed:** 2026-07-16

## Scientific classification

- **Kingdom:** Animalia
- **Phylum:** Chordata
- **Class:** Aves
- **Order:** Apodiformes
- **Family:** Trochilidae

## Facts at a glance

| Attribute | Value |
| --- | --- |
| Scientific name | Archilochus colubris |
| Diet | Nectarivore (also small insects) |
| Habitat | Gardens, woodlands, meadows |
| Lifespan | 3–5 years |
| Weight | 2–6 g (about a penny) |
| Top speed | 50 km/h (30 mph) in flight |
| Conservation status | Least Concern (IUCN) |

## Size and appearance

The ruby-throated hummingbird is a featherweight, tipping the scales at just 2 to 6 grams and measuring around 9 cm (3.5 in) long. Both sexes have iridescent green backs, but only the adult male sports the dazzling ruby-red throat patch, called a gorget, that gives the species its name. The colour comes from the way light refracts off the feathers rather than from pigment, so it can appear black until it catches the sun.

## Hovering flight

Hummingbirds are the only birds that can hover in place and fly backwards, thanks to a shoulder joint that lets the wings trace a figure-eight. A ruby-throat beats its wings around 50 times per second and can reach 50 km/h (30 mph) in flight, its wings producing the humming sound that gives the family its name. This acrobatic flight is enormously demanding, and their heart can race to well over 1,000 beats a minute.

## Feeding on nectar

These birds live mainly on flower nectar, which they lap up with a long, grooved tongue that flicks in and out many times a second. To fuel their frantic metabolism, a hummingbird may visit hundreds of flowers a day and eat around half its body weight in sugar. They also snatch small insects and spiders for protein, and are important pollinators, carrying pollen between the tubular red and orange flowers they favour.

## Migration and torpor

Ruby-throated hummingbirds breed across eastern North America and migrate to Central America for the winter, many crossing the Gulf of Mexico in a single non-stop flight of around 800 km (500 miles). To survive cold nights and food shortages, they can enter torpor, a deep sleep-like state in which their heart rate and body temperature drop dramatically to save energy. This ability helps such a tiny animal weather conditions that would otherwise be fatal.

## Nesting and young

The female builds a tiny cup nest, about the size of a walnut half, from plant down and spider silk, which stretches as the chicks grow. She lays two pea-sized white eggs and raises the young entirely on her own. The chicks fledge in around three weeks, and the flexible silk-bound nest expands to accommodate them as they develop.

## Lifespan and conservation

In the wild, ruby-throated hummingbirds usually live 3 to 5 years, though the rigours of migration and their high-energy lifestyle mean many do not survive their first year. The species is common and listed as Least Concern by the IUCN. Garden feeders and native flowering plants help support them, especially during migration when they need to refuel frequently.

## Frequently asked questions

### How fast do hummingbirds flap their wings?

A ruby-throated hummingbird beats its wings around 50 times per second in normal flight, and even faster during courtship displays. This rapid wingbeat produces the humming sound that gives the birds their name.

### How much does a hummingbird weigh?

The ruby-throated hummingbird weighs just 2 to 6 grams, roughly the same as a penny. It is one of the smallest birds in North America.

### What do hummingbirds eat?

They feed mainly on sugary flower nectar, which they lap up with a long tongue, and they also eat small insects and spiders for protein. To fuel their fast metabolism, a hummingbird may visit hundreds of flowers a day.

### Can hummingbirds really fly backwards?

Yes. Hummingbirds are the only birds that can truly hover and fly backwards, thanks to a flexible shoulder joint that lets their wings trace a figure-eight pattern. This lets them hold steady at a flower while feeding.

### How long do hummingbirds live?

Ruby-throated hummingbirds typically live 3 to 5 years in the wild. Many die in their first year, but survivors can reach the upper end of that range despite their demanding, high-energy lifestyle.

### Where do ruby-throated hummingbirds go in winter?

They migrate south to Central America, with many crossing the Gulf of Mexico in a single non-stop flight of around 800 km (500 miles). They return to eastern North America to breed in spring.

## Sources

- BirdLife International — hummingbird assessments. IUCN Red List of Threatened Species.
- Billerman, S. M. et al. (eds.). Birds of the World. Cornell Lab of Ornithology.
- [Animal Diversity Web — Trochilidae (hummingbirds). University of Michigan Museum of Zoology.](https://animaldiversity.org/accounts/Trochilidae/)

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Source: Global Animal Guide (https://globalanimalguide.org/animals/hummingbird/). Licensed CC BY-NC 4.0 — free for non-commercial reuse with attribution.