Ciconiiformes / Ciconiidae / Ciconia
Oriental Stork
Ciconia boyciana · 东方白鹳
Introduction
A large stork in the family Ciconiidae, formerly treated as a subspecies of the white stork. It inhabits wetlands across East Asia and Siberia. The species is solitary outside the breeding season and acts as an apex predator in its habitat. It is classified as endangered on the IUCN Red List.
Description
Typically larger than the white stork, measuring 100–129 cm (39.5–51 in) long, 110–150 cm (43–59 in) tall, with a wingspan of 2.22 m (7.3 ft) and a weight of 2.8–5.9 kg (6.2–13.0 lb). Plumage is white with black-feathered wings. Distinctive features include red skin around the eye, a whitish iris, and a black bill. Both sexes are similar, though the female is slightly smaller. Juveniles are white with orange bills.
Identification
Distinguished from the similar white stork by red orbital skin, a whitish iris, and a black bill. Larger in size with a wingspan of 2.22 m.
Distribution & Habitat
Found in Japan, China, Korea, and Siberia. Once extirpated from Japan and the Korean Peninsula, with a wild hatchling reported in Japan in 2007 after a 40-year absence. Migrates to eastern China in September and returns in March.
Behavior & Ecology
Solitary except during the breeding season. Forages by wading in marshes, pond edges, coastal beaches, and other wetlands. Diet consists mainly of fish, frogs, insects, small birds, reptiles, and rodents. The female lays between two and six eggs per clutch.
Conservation
Classified as endangered on the IUCN Red List due to habitat loss and overhunting. Listed on Appendix I of CITES. Populations were heavily impacted by the rice industry and pesticide use. Reintroduction efforts are ongoing, with pushes for organic rice farming to support safe breeding. A chromosome-scale reference genome indicates relatively high genetic diversity, suggesting strong capacity for population recovery.
Source: Wikipedia · CC BY-SA 3.0
Taxonomy
- Order
- Ciconiiformes
- Family
- Ciconiidae
- Genus
- Ciconia
Distribution
Siberia, Manchuria, and Korea; winters to southern China and northern India
Data Sources
Species description from Wikipedia, licensed under CC BY-SA 3.0.
Bird images and sounds sourced from GBIF, contributed by citizen scientists worldwide under Creative Commons licenses.
Taxonomy data from AviList 2025.
