リュウキュウヨシゴイ vs ヒメヨシゴイ

Ixobrychus cinnamomeus compared with Ixobrychus minutus

Key Differences

• リュウキュウヨシゴイ is Least Concern while ヒメヨシゴイ is Endangered.

Taxonomic Classification

Rank	リュウキュウヨシゴイ	ヒメヨシゴイ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Aves (鳥類)	Aves (鳥類)
Order same	Pelecaniformes (ペリカン目)	Pelecaniformes (ペリカン目)
Family same	Ardeidae	Ardeidae
Genus same	Ixobrychus	Ixobrychus
Species	Ixobrychus cinnamomeus	Ixobrychus minutus

Evolutionary Relationship

リュウキュウヨシゴイ and ヒメヨシゴイ share a common ancestor at the Genus level: Ixobrychus.

Conservation Status

リュウキュウヨシゴイ

LC — Least Concern

ヒメヨシゴイ

EN — Endangered

Physical Characteristics

Attribute	リュウキュウヨシゴイ	ヒメヨシゴイ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

リュウキュウヨシゴイ

Habitat

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

Range

Distributed across Norway and Taiwan.

ヒメヨシゴイ

Habitat

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

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

リュウキュウヨシゴイ

The cinnamon bittern (Ixobrychus cinnamomeus) is a small heron in the family Ardeidae, widely distributed across South and Southeast Asia, from Pakistan and India east through Southeast Asia to China, Japan, and the Philippines, south through Indonesia and Papua New Guinea. It inhabits wetlands including rice paddies, reedbeds, marshy grasslands, and the margins of ponds and rivers, where it stalks prey in dense emergent vegetation. The plumage is entirely cinnamon-brown in males, while females are more streaked. Like other small bitterns, it has a cryptic freezing posture—stretching its neck vertically to blend with reeds—when alarmed. The cinnamon bittern is classified as Least Concern by the IUCN, with a widespread and abundant Asian distribution. It is entirely absent from Europe; database records citing Norway are data artifacts. This species is highly tolerant of rice cultivation and degraded wetlands, making it one of the more adaptable Asian herons. However, wetland loss from drainage and intensification of rice agriculture across South and Southeast Asia poses long-term threats to wetland species broadly. The cinnamon bittern is a shy and secretive bird that is more often heard—giving a deep, booming call—than seen in its dense wetland habitat.

ヒメヨシゴイ

コヨシゴイ（Ixobrychus minutus）はIUCNレッドリストで絶滅危惧（EN）に分類されています。野生での絶滅リスクが高く、個体数が著しく減少し、生存への継続的な脅威にさらされています。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway