Cinereous Harrier vs Eurasian Marsh-Harrier

Circus cinereus compared with Circus aeruginosus

Key Differences

• Cinereous Harrier is Least Concern while Eurasian Marsh-Harrier is Endangered.

Taxonomic Classification

Rank	Cinereous Harrier	Eurasian Marsh-Harrier
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class same	Aves (새)	Aves (새)
Order same	Accipitriformes (수리목)	Accipitriformes (수리목)
Family same	Accipitridae (Hawks & Eagles)	Accipitridae (Hawks & Eagles)
Genus same	Circus	Circus
Species	Circus cinereus	Circus aeruginosus

Evolutionary Relationship

Cinereous Harrier and Eurasian Marsh-Harrier share a common ancestor at the Genus level: Circus.

Conservation Status

Cinereous Harrier

LC — Least Concern

Eurasian Marsh-Harrier

EN — Endangered

Physical Characteristics

Attribute	Cinereous Harrier	Eurasian Marsh-Harrier
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cinereous Harrier

Habitat

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

Range

Distributed across Colombia, Ecuador, and Norway.

Eurasian Marsh-Harrier

Habitat

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

Range

Found across Asia (Taiwan) and Europe (6 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Cinereous Harrier

The cinereous harrier (Circus cinereus) is a medium-sized raptor in the family Accipitridae, found across South America, with a breeding range extending from Colombia and Venezuela south through the Andes and adjacent lowlands to Tierra del Fuego and the Falkland Islands. It inhabits open grasslands, marshes, reedbeds, agricultural areas, and the high puna grasslands of the Andes, hunting low over the ground for small birds, rodents, lizards, and frogs. Like other harriers, the cinereous harrier exhibits marked sexual dimorphism: males are pale gray with black wingtips and a white rump, while females are brown and heavily streaked. The species undertakes seasonal migrations, with southern breeding populations moving northward in the austral winter. The cinereous harrier is classified as Least Concern by the IUCN, reflecting its wide South American range and adaptability to a variety of open habitats. It is entirely absent from Europe and occurs nowhere near Norway; database records to the contrary are artifacts. Threats include habitat loss from wetland drainage, conversion of native grasslands to intensive agriculture, and persecution from farmers who incorrectly blame harriers for poultry losses. The species can adapt to agricultural landscapes including rice paddies and open pastures, which provides some buffer against habitat loss.

Eurasian Marsh-Harrier

개구리매(Circus aeruginosus)는 IUCN 적색목록에서 위기(EN) 종으로 분류됩니다. 야생에서 멸종될 위험이 높으며 개체수가 크게 감소하고 생존에 대한 지속적인 위협이 존재합니다.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway