Asian Openbill vs Chiru

Anastomus oscitans compared with Pantholops hodgsonii

Key Differences

• Asian Openbill is Least Concern while Chiru is Near Threatened.

Taxonomic Classification

Rank	Asian Openbill	Chiru
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Ciconiiformes (Ciconiiformes)	Artiodactyla (Even-toed Ungulates)
Family	Ciconiidae	Bovidae (Bovids)
Genus	Anastomus	Pantholops
Species	Anastomus oscitans	Pantholops hodgsonii

Evolutionary Relationship

Asian Openbill and Chiru share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Asian Openbill

LC — Least Concern

Chiru

NT — Near Threatened

Physical Characteristics

Attribute	Asian Openbill	Chiru
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Asian Openbill

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway.

Chiru

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Asian Openbill

The Asian Openbill (Anastomus oscitans) is a species in the genus Anastomus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments. Found in Norway.

Chiru

The Chiru (Pantholops hodgsonii), also known as the Tibetan Antelope, is a bovid endemic to the Tibetan Plateau and adjacent high-altitude grasslands of China, with small populations in India. Males bear long, slender, nearly vertical horns that can exceed 70 centimetres in length, while females are hornless. The species is highly adapted to life at elevations of 3,700–5,500 metres, possessing a dense, fine underfur known as shahtoosh — one of the finest animal fibres in the world — which provided insulation against extreme cold but also made chiru a prime target for illegal poaching. Massive hunting pressure during the late twentieth century for shahtoosh shawl production devastated populations, which fell to as few as 75,000 individuals. Following intensified conservation efforts, trade bans, and anti-poaching patrols in China, numbers have partially recovered, though the species remains Near Threatened. Chiru are highly migratory; females undertake remarkable annual migrations of up to 300 kilometres to reach calving grounds in the Chang Tang plateau. Males typically remain at lower elevations year-round. They graze on grasses, sedges, and forbs, and face ongoing threats from climate change affecting high-altitude pasture productivity and from infrastructure development fragmenting migration corridors.