Millileaf Spiderhead vs Scarlet Macaw

Serruria millefolia compared with Ara macao

Key Differences

• Millileaf Spiderhead is Endangered while Scarlet Macaw is Least Concern.

Taxonomic Classification

Rank	Millileaf Spiderhead	Scarlet Macaw
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Aves (Birds)
Order	Proteales (Proteales)	Psittaciformes (Parrots)
Family	Proteaceae	Psittacidae (True Parrots)
Genus	Serruria	Ara (Macaws)
Species	Serruria millefolia	Ara macao

Conservation Status

Millileaf Spiderhead

EN — Endangered

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Millileaf Spiderhead	Scarlet Macaw
Diet	—	Herbivore
Average Lifespan	—	50 years
Average Length	—	85 cm
Average Weight	—	1.0 kg

Habitat & Geographic Range

Millileaf Spiderhead

Habitat

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

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.

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.