Scarlet Macaw vs Simons’s Mouse Opossum

Ara macao compared with Marmosa simonsi

Key Differences

• Scarlet Macaw is Least Concern while Simons’s Mouse Opossum is Not Evaluated.

Taxonomic Classification

Rank	Scarlet Macaw	Simons’s Mouse Opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Psittaciformes (Parrots)	Didelphimorphia (Didelphimorphia)
Family	Psittacidae (True Parrots)	Didelphidae
Genus	Ara (Macaws)	Marmosa
Species	Ara macao	Marmosa simonsi

Evolutionary Relationship

Scarlet Macaw and Simons’s Mouse Opossum share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Simons’s Mouse Opossum

NE — Not Evaluated

Physical Characteristics

Attribute	Scarlet Macaw	Simons’s Mouse Opossum
Diet	Herbivore	—
Average Lifespan	50 years	—
Average Length	85 cm	—
Average Weight	1.0 kg	—

Habitat & Geographic 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.

Simons’s Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

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 1 countries:

🇪🇨 Ecuador