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Global Animal Guide
Free-range chicken foraging in farmyard
Bird Domesticated

Chicken

Gallus gallus domesticus

Quick answer

Chickens descend from red junglefowl domesticated in Southeast Asia over 8,000 years ago — over 25 billion alive at any time for eggs and meat. Weighing about 2.5 kg, living 8 years in backyards, and reaching 15 km/h, hens communicate with dozens of distinct calls.

By the Global Animal Guide editorial team Last reviewed How we research & review

Also available in Español (Gallina)

Chicken facts at a glance

Key facts about the Chicken
Scientific name Gallus gallus domesticus
Diet Omnivore — grain, insects, vegetation, and scraps
Habitat Domestic worldwide; origin in Southeast Asian forest edge
Lifespan 5–10 years (backyard); commercial layers shorter
Weight 1.5–3 kg (3.3–6.6 lb); breeds vary widely
Top speed Up to 15 km/h (9 mph); brief fluttering flight
Conservation status Domesticated (IUCN)
Scientific classification
Kingdom Animalia
Phylum Chordata
Class Aves
Order Galliformes
Family Phasianidae
Genus Gallus

Where it lives

Domesticated worldwide; wild ancestor red junglefowl native to Southeast Asian forest edges.

Native range (approximate)

What is a group of chickens called?

Group name (collective noun)

A group of Chickens is called a flock.

Baby name

A baby Chicken is called a chick.

Explore more animal collective nouns and baby animal names .

Distribution and habitat

Chickens live in Domesticated worldwide; wild ancestor red junglefowl native to Southeast Asian forest edges. Preferred habitat includes domestic worldwide; origin in southeast asian forest edge. Across Africa, Asia, Europe, North America, Oceania, South America, population density reflects prey availability, water access, and human disturbance. Protected areas and wildlife corridors remain essential for long-term persistence.

Physical traits and behaviour

Chickens typically reach about 0.5 m in length and 2.5 kg in weight, with top speeds near 15 km/h. The world's most common bird. Daily activity, social structure, and seasonal movements reflect pressures in their native environment.

Diet and ecological role

Chickens feed on omnivore — grain, insects, vegetation, and scraps. Foraging shifts with season and local abundance. As birds, they influence food webs — controlling prey, dispersing seeds, or shaping habitat through feeding and movement.

Conservation and coexistence

Listed as Domesticated on the IUCN Red List. Habitat loss, hunting, and climate change threaten many populations. Responsible ecotourism and community conservation help in parts of their range. Never approach or feed wild chickens.

Human interest and research

Chickens feature in folklore, tourism, and scientific study worldwide. Ongoing research tracks population trends, genetics, and responses to environmental change — data that guides national protection policies.

Dig deeper into the Chicken

Explore the Chicken

Did you know? Chicken facts

  • Chickens are domesticated junglefowl raised globally for eggs and meat — over 25 billion alive at any time.
  • Brief fluttering flights over fences — not sustained flight.
  • Backyard hens often reach 8–10 years; commercial layers are shorter.
  • Conservation: Domesticated.

Diet & feeding

Chicken feeds primarily as a omnivore — grain, insects, vegetation. Hens teach chicks what to eat and maintain strict pecking orders.

Adaptations

  • Chickens were domesticated in Southeast Asia over 8,000 years ago.
  • Hens teach chicks what to eat and maintain strict pecking orders.

Behaviour & ecology

  • Chickens were domesticated in Southeast Asia over 8,000 years ago.
  • Hens teach chicks what to eat and maintain strict pecking orders.

Communication

  • Chicken uses calls and visual displays to communicate territory, alarm, and breeding status.
  • Vocal repertoires vary by species and are often learned or refined during development.

Habitat & range

Domestic worldwide

Ecological role

Chicken contributes to seed dispersal, insect control, or nutrient cycling depending on diet and foraging habits.

Frequently asked questions about the Chicken

Where do chickens live?

Domesticated worldwide; wild ancestor red junglefowl native to Southeast Asian forest edges.

What do chickens eat?

Omnivore — grain, insects, vegetation, and scraps.

How long do chickens live?

About 8 years in the wild on average.

Are chickens endangered?

IUCN status: Domesticated.

What is a group of chickens called?

A group of Chickens is called a flock.

What is a baby chicken called?

A baby Chicken is called a chick.

Sources & references

This guide is compiled and reviewed against established zoological and conservation references. Key sources for the Chicken:

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