アカハラサギ vs リュウキュウヨシゴイ

Agamia agami compared with Ixobrychus cinnamomeus

Key Differences

• アカハラサギ is Vulnerable while リュウキュウヨシゴイ is Least Concern.

Taxonomic Classification

Rank	アカハラサギ	リュウキュウヨシゴイ
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	Agamia	Ixobrychus
Species	Agamia agami	Ixobrychus cinnamomeus

Evolutionary Relationship

アカハラサギ and リュウキュウヨシゴイ share a common ancestor at the Family level: Ardeidae.

Conservation Status

アカハラサギ

VU — Vulnerable

リュウキュウヨシゴイ

LC — Least Concern

Physical Characteristics

Attribute	アカハラサギ	リュウキュウヨシゴイ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

アカハラサギ

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its 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.

アカハラサギ

The Agami Heron (Agamia agami) is a species in the genus Agamia. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway