リュウキュウヨシゴイ vs コヨシゴイ

Ixobrychus cinnamomeus compared with Ixobrychus exilis

Taxonomic Classification

Rank	リュウキュウヨシゴイ	コヨシゴイ
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 exilis

Evolutionary Relationship

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

Conservation Status

リュウキュウヨシゴイ

LC — Least Concern

コヨシゴイ

LC — Least Concern

Physical Characteristics

Attribute	リュウキュウヨシゴイ	コヨシゴイ
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.

コヨシゴイ

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, United States, and Venezuela.

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.

コヨシゴイ

コアメリカサンカノゴイ（Ixobrychus exilis）はIUCNレッドリストで軽度懸念（LC）に分類されています。分布域全体にわたって広く分布し個体数が豊富で安定しており、早急な保護上の懸念はありません。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway