ハッカチョウ vs Ray's Knotgrass

Acridotheres cristatellus compared with Polygonum oxyspermum

Key Differences

• ハッカチョウ is Least Concern while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	ハッカチョウ	Ray's Knotgrass
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Aves (鳥類)	Magnoliopsida (モクレン綱)
Order	Passeriformes (スズメ目)	Caryophyllales (ナデシコ目)
Family	Sturnidae	Polygonaceae
Genus	Acridotheres	Polygonum
Species	Acridotheres cristatellus	Polygonum oxyspermum

Conservation Status

ハッカチョウ

LC — Least Concern

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	ハッカチョウ	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

ハッカチョウ

Habitat

Inhabits tropical and subtropical dry broadleaf forests and tropical and subtropical grasslands and savannas within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan, Singapore, United Arab Emirates), Europe (7 countries), and South America (Argentina, Bolivia).

Ray's Knotgrass

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

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

ハッカチョウ

カンムリハッカ（Acridotheres cristatellus）はIUCNレッドリストで軽度懸念（LC）に分類される。分布域全体で広く豊富に生息し、個体数は安定しており、即座の保全上の懸念はない。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway