リュウキュウヨシゴイ vs small tortoiseshell

Ixobrychus cinnamomeus compared with Aglais urticae

Key Differences

• リュウキュウヨシゴイ is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	リュウキュウヨシゴイ	small tortoiseshell
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Arthropoda (節足動物)
Class	Aves (鳥類)	Insecta (昆虫)
Order	Pelecaniformes (ペリカン目)	Lepidoptera (チョウ目)
Family	Ardeidae	Nymphalidae (Brush-footed Butterflies)
Genus	Ixobrychus	Aglais
Species	Ixobrychus cinnamomeus	Aglais urticae

Evolutionary Relationship

リュウキュウヨシゴイ and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

リュウキュウヨシゴイ

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	リュウキュウヨシゴイ	small tortoiseshell
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.

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

small tortoiseshell

スモールトータスシェル(Aglais urticae)はIUCNレッドリストで準絶滅危惧(NT)に分類されている。絶滅危惧種に分類される一歩手前の段階で、保全措置がなければ脆弱になる可能性のある個体群を持つ。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway