# Crane — Facts, Threats & Conservation

*Family Gruidae*

> Cranes are a family (Gruidae) of 15 large, long-lived wading birds found on every continent except South America and Antarctica; the family spans conservation statuses from Least Concern (Common Crane, over 700,000 birds) to Critically Endangered (Siberian Crane, roughly 6,500–7,000 birds), making them collectively one of the most threatened bird groups in the world.

**IUCN status:** Varies by species (Critically Endangered to Least Concern)  ·  **WARN range:** Europe, Asia, Africa, North America, Australia

## Quick facts
| Fact | Value |
| --- | --- |
| Family | Gruidae |
| Living species | 15 |
| Height range | 90 cm (Demoiselle) to 1.8 m (Sarus) |
| Wingspan | Up to 250 cm (Sarus Crane) |
| Lifespan | 20–30+ years in the wild; 80+ years recorded in captivity |
| Diet | Omnivorous — grain, tubers, insects, fish, frogs |
| Habitat | Wetlands, grasslands, marshes, tundra |
| Range | Every continent except South America and Antarctica |
| Most threatened species | Siberian Crane — Critically Endangered |
| Conservation status (family) | 11 of 15 species threatened or near-threatened |

## Scientific classification
- **Kingdom:** Animalia
- **Phylum:** Chordata
- **Class:** Aves
- **Order:** Gruiformes
- **Family:** Gruidae
- **Genera:** Grus, Antigone, Leucogeranus, Balearica, Anthropoides, Bugeranus
- **Species:** 15 living species

## Conservation status
- **Status:** Varies by species
- **Population:** Common Crane >700,000; Siberian Crane ~6,500–7,000; Whooping Crane ~557 wild migratory birds (winter 2024–2025 survey)
- **Trend:** Mixed — Common Crane stable/increasing; Siberian Crane recovering in east but western population extinct; Whooping Crane slowly recovering; Red-crowned and other Asian species declining
- **Assessed:** 2023–2025 (species-specific IUCN assessments)
- **CITES:** Appendix I (most threatened species, e.g. Siberian, Whooping, Red-crowned, Hooded, White-naped, Black-necked cranes); Appendix II (remaining Gruidae)
- The Gruidae family as a whole is listed under CITES. Siberian, Whooping, Red-crowned, Hooded, White-naped, and Black-necked cranes are in Appendix I; the remaining species fall under Appendix II. The Wattled Crane is listed in Appendix II, not Appendix I.

## Key facts: Crane
- Of 15 crane species, 11 are threatened or near-threatened — the highest proportion of any major bird family.
- The Siberian Crane is the only crane rated Critically Endangered; its eastern population has recovered from under 3,500 birds in 2015 to nearly 7,000 by 2024 thanks to flyway-wide conservation.
- The Sarus Crane is the world's tallest flying bird, reaching 1.8 m (5 ft 11 in) and weighing up to 12 kg.
- Many cranes are renowned for elaborate, synchronised courtship dances — leaping, bowing, and wing-spreading — that reinforce lifelong pair bonds.
- Cranes coil an elongated trachea inside the sternum to amplify their calls, which can carry several kilometres across open wetlands.
- Wetland drainage, agricultural conversion, power-line collisions, and illegal hunting remain the chief threats driving crane population declines.

## What is a crane and what makes it different from other large wading birds?
Cranes belong to the family Gruidae, order Gruiformes, and are among the most ancient bird lineages still alive. Unlike herons, which retract their necks into an S-curve during flight, cranes hold the neck straight and trail their long legs behind — a silhouette unmistakable at any distance. The 15 living species split into two subfamilies: the two crowned cranes (Balearicinae) of sub-Saharan Africa, which retain a primitive perching ability and roost in trees; and the 13 typical cranes (Gruinae), distributed across Eurasia, North America, Africa, and Australia. Typical cranes possess a remarkable anatomical adaptation: a coiled trachea that can reach up to 1.5 metres in length, looping inside the keeled sternum and functioning as a resonating chamber. This structure gives cranes their penetrating, bugling calls — able to carry several kilometres — used to maintain pair contact across wide marshes, warn rivals, and coordinate migratory flocks. Cranes range enormously in size: the petite Demoiselle Crane stands roughly 90 cm, while the Sarus Crane of South and Southeast Asia reaches 1.8 m tall and holds the record as the world's tallest flying bird. All species share long legs, long necks, and broad, rounded wings built for sustained soaring on thermals during migration.

## Where do cranes live and how far do they migrate?
Cranes inhabit a wide variety of open, often waterlogged landscapes — shallow freshwater marshes, sedge bogs, wet grasslands, river floodplains, rice paddies, and Arctic tundra. Breeding pairs need undisturbed wetland edges to nest on the ground, while wintering flocks can use arable farmland for foraging. The family's global range covers every continent except South America and Antarctica, with the greatest species diversity in Asia: East Asia alone hosts eight of the 15 species. Migration is a defining feature of the group. Common Cranes (Grus grus) breed across boreal Eurasia from Scandinavia to Siberia and funnel south through central Europe and Central Asia to winter in Spain, north Africa, the Middle East, Pakistan, and India. Some populations follow the Indus Flyway through Pakistan's Sindh, Punjab, and Khyber Pakhtunkhwa provinces. Demoiselle Cranes cross the Himalayas at over 8,000 metres, one of the highest migrations of any bird. Siberian Cranes travel up to 5,000 km from Siberian breeding grounds to winter at China's vast Poyang Lake. Migration routes are learned, not innate — juvenile cranes follow experienced adults, and flocks can shift to new corridors in response to habitat change, a flexibility that proves both an asset and a vulnerability when key stopover wetlands are drained.

## Why are so many crane species threatened with extinction?
Eleven of the 15 crane species are listed as threatened or near-threatened by the IUCN, making Gruidae one of the bird families most at risk globally. The root cause is wetland loss: drainage for agriculture, dam construction, and irrigation schemes have eliminated vast areas of the shallow marshes on which cranes depend for nesting, roosting, and refuelling during migration. The Siberian Crane — the only species rated Critically Endangered — has lost critical stopover wetlands along its central and western flyways; its western population that once wintered in Iran and India is functionally extinct, leaving a single eastern population centred on Poyang Lake in China. Red-crowned and Hooded Cranes, both Vulnerable, face severe habitat fragmentation across northeast Asia. Power-line collisions are a leading non-natural cause of crane mortality worldwide: documented fatalities in reintroduced Whooping Crane populations alone run into the dozens since the 1970s. Illegal hunting persists along several flyways, particularly in parts of Afghanistan and Pakistan, where Common Cranes and Demoiselle Cranes are targeted. Agricultural chemicals contaminate feeding grounds, and climate-driven changes to wetland hydrology are altering breeding success. The Whooping Crane offers a rare beacon of hope: from as few as 14–16 wild migratory birds in 1941, sustained protection, captive breeding, and reintroduction programmes raised the wild migratory population to a record 557 in the 2024–2025 winter survey — one of conservation's greatest recovery stories.

## How do cranes behave and why is their dancing so famous?
Crane behaviour is defined by two qualities that have captivated humans for millennia: extraordinary vocalisations and spectacular communal dancing. Paired cranes perform 'unison calls', a precisely timed duet in which male and female alternate notes in a call that can be heard kilometres away. These calls reinforce the pair bond and advertise territory simultaneously. The dances — involving deep bows, upward leaps of a metre or more, wing-spreading, and tossing sticks or grass into the air — occur during courtship but also spontaneously throughout the year, involving juveniles and non-breeding adults as well as pairs. Researchers regard the behaviour as a form of social bonding and emotional regulation unique among birds. Cranes are exceptionally long-lived; one Siberian Crane survived more than 80 years in captivity, and wild Common Cranes regularly exceed 20 years. Because juveniles spend their first year travelling with parents, family bonds persist well beyond fledging. Most species are omnivorous, eating plant tubers, grain, insects, small fish, frogs, and invertebrates, with diet shifting seasonally. Flocks of tens of thousands assemble at key staging sites — Nebraska's Platte River for Sandhill Cranes, Poyang Lake for Siberian Cranes — creating wildlife spectacles of global significance. These aggregations also make the birds vulnerable: a single pollution event or disease outbreak at a bottleneck site could devastate a population.

## What is the cultural significance of cranes across human history?
Few birds have inspired human culture as deeply or consistently as the crane. In East Asian traditions, the crane stands as a symbol of longevity, wisdom, and good fortune. In Japan, the red-crowned crane — known as 'tancho' — is called the 'bird of happiness' and is believed to live a thousand years. The practice of folding a thousand origami paper cranes (senbazuru) to earn a wish is rooted in this mythology and gained international resonance through the story of Sadako Sasaki after the 1945 atomic bombing of Hiroshima. In China, classical paintings depict cranes ascending with Taoist immortals; giving a crane image to an elder on their birthday expresses wishes for long life and health. In West African cultures, crowned cranes are regarded as royal birds, appearing on Uganda's national flag. Ancient Greek and Roman writers described cranes as models of order and vigilance, and the arrangement of migrating flocks inspired early alphabetical theories. In Hindu tradition, the sarus crane is considered a symbol of marital fidelity, believed to mate for life and die of grief if a partner is lost. This deep cultural embeddedness has created some protection — many communities refrain from harming cranes out of respect — but has not been sufficient to offset industrial-scale habitat destruction across most of the family's range.

## What WARN does
WARN does not currently run projects specifically for crane conservation, and this guide is offered as free educational content to support public awareness. However, cranes are deeply connected to the health of wetland ecosystems — the same habitats that WARN's work in Pakistan and Indonesia helps to protect. Common Cranes and Demoiselle Cranes winter in Pakistan's Indus Basin wetlands, and understanding the pressures these birds face helps build the broader case for wetland protection across Asia. Every person who learns why cranes matter becomes an advocate for the freshwater habitats that sustain whole communities of wildlife.

Wetlands that shelter cranes on their extraordinary migrations are the same ecosystems that countless other species — and millions of people — depend on. Supporting WARN helps fund the habitat protection work that keeps those landscapes intact for generations of wildlife to come.

## Frequently asked questions: Crane
### How many crane species are there?
There are 15 living species of crane in the family Gruidae, divided into two subfamilies: the two crowned cranes (Balearicinae) of sub-Saharan Africa, and the 13 typical cranes (Gruinae) found across Eurasia, North America, Africa, and Australia.

### What is the most endangered crane species?
The Siberian Crane (Leucogeranus leucogeranus) is the only crane species rated Critically Endangered by the IUCN. Its eastern population — the largest — has grown from under 3,500 individuals in 2015 to nearly 7,000 by 2024 following intensive flyway conservation, but the western and central populations are functionally extinct.

### How long do cranes live?
Cranes are exceptionally long-lived birds. Wild Common Cranes regularly live 20–30 years, and Whooping Cranes average 22–30 years in the wild. In captivity, Siberian Cranes have survived more than 80 years — a Siberian Crane named Wolf holds the Guinness record for the world's oldest crane. Their longevity means that even small improvements in adult survival rates can significantly aid population recovery.

### Why do cranes dance?
Crane dances — involving leaping, bowing, wing-spreading, and tossing objects — serve multiple social functions. During the breeding season they are used in courtship to cement pair bonds, but dances also occur outside the breeding season among juveniles and flocks, and appear to function as a form of social bonding and stress relief. Paired cranes may dance together for life.

### Do cranes mate for life?
Most crane species form long-term monogamous pair bonds that can last many years or a lifetime. However, if one partner dies or if repeated breeding failures occur, cranes will seek new mates. Pairs reinforce their bond year-round through synchronised unison calls and dancing, making the crane one of the most celebrated symbols of fidelity across many world cultures.

### What is the tallest flying bird in the world?
The Sarus Crane (Antigone antigone) is the world's tallest flying bird, reaching up to 1.8 m (5 ft 11 in) in height and weighing up to 12 kg (26 lb). It is found across the Indian subcontinent, Southeast Asia, and northern Australia, and is listed as Vulnerable on the IUCN Red List due to wetland loss and agricultural intensification.

## Sources
- [BirdLife DataZone — Common Crane (Grus grus) species factsheet](https://datazone.birdlife.org/species/factsheet/common-crane-grus-grus)
- [BirdLife DataZone — Siberian Crane (Leucogeranus leucogeranus) species factsheet](https://datazone.birdlife.org/species/factsheet/siberian-crane-leucogeranus-leucogeranus)
- [U.S. Fish & Wildlife Service — 2025 wintering Whooping Crane count](https://www.fws.gov/press-release/2025-06/2025-wintering-whooping-crane-count)
- [CITES Appendices (February 2025) — Gruidae listing](https://cites.org/sites/default/files/eng/app/2025/E-Appendices-2025-02-07.pdf)
- [ICF Crane Conservation Strategy — Eurasian Crane (Grus grus) population size >700,000](https://savingcranes.org/wp-content/uploads/2024/10/crane_conservation_strategy_eurasian_crane.pdf)
- [ICF — Ten-Year Partnership Nearly Doubles Siberian Crane Population (December 2024)](https://savingcranes.org/news/resources/ten-year-partnership-doubling-siberian-crane-population/)
- [USGS — Whooping Cranes Past and Present](https://www.usgs.gov/publications/whooping-cranes-past-and-present)
- [Crane Conservation Strategy — ICF/IUCN SSC 2019 (all 15 species)](https://savingcranes.org/wp-content/uploads/2024/11/crane_conservation_strategy_web_2019.pdf)

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Full guide: https://worldanimalrescuenetwork.org/wildlife-guides/crane