Eurasian Marsh-Harrier vs Scarlet Macaw

Circus aeruginosus compared with Ara macao

Key Differences

• Eurasian Marsh-Harrier is Endangered while Scarlet Macaw is Least Concern.

Taxonomic Classification

Rank	Eurasian Marsh-Harrier	Scarlet Macaw
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Accipitriformes (Hawks & Eagles)	Psittaciformes (Parrots)
Family	Accipitridae (Hawks & Eagles)	Psittacidae (True Parrots)
Genus	Circus	Ara (Macaws)
Species	Circus aeruginosus	Ara macao

Evolutionary Relationship

Eurasian Marsh-Harrier and Scarlet Macaw share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Eurasian Marsh-Harrier

EN — Endangered

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Eurasian Marsh-Harrier	Scarlet Macaw
Diet	—	Herbivore
Average Lifespan	—	50 years
Average Length	—	85 cm
Average Weight	—	1.0 kg

Habitat & Geographic Range

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.

Scarlet Macaw

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found across Europe (5 countries) and South America (Colombia, Ecuador, Venezuela). Population trends indicate a declining trajectory in parts of its range.

Eurasian Marsh-Harrier

Eurasian Marsh-Harrier (Circus aeruginosus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Scarlet Macaw

One of the most brilliantly colored birds in the Americas, scarlet macaws display vivid red, yellow, and blue plumage with wingspans reaching 1 meter. Found in humid lowland forests from Mexico to Bolivia, they are highly intelligent, long-lived — up to 75 years — and form lifelong pair bonds. They travel long distances to clay licks where they consume mineral-rich soil to detoxify seeds. Listed as Least Concern but locally threatened by habitat loss and the pet trade.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway