リュウキュウヨシゴイ vs Mona Monkey

Ixobrychus cinnamomeus compared with Cercopithecus mona

Key Differences

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

Taxonomic Classification

Rank	リュウキュウヨシゴイ	Mona Monkey
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Aves (鳥類)	Mammalia (哺乳類)
Order	Pelecaniformes (ペリカン目)	Primates (サル目)
Family	Ardeidae	Cercopithecidae (Old World Monkeys)
Genus	Ixobrychus	Cercopithecus
Species	Ixobrychus cinnamomeus	Cercopithecus mona

Evolutionary Relationship

リュウキュウヨシゴイ and Mona Monkey share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

リュウキュウヨシゴイ

LC — Least Concern

Mona Monkey

NT — Near Threatened

Physical Characteristics

Attribute	リュウキュウヨシゴイ	Mona Monkey
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.

Mona Monkey

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Neotropic biogeographic realm.

Range

Distributed across Grenada and Sao Tome and Principe. 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.