Great Hammerhead vs Scarlet Macaw

Sphyrna mokarran compared with Ara macao

Key Differences

• Great Hammerhead is Critically Endangered while Scarlet Macaw is Least Concern.
• Great Hammerhead is carnivore while Scarlet Macaw is herbivore.
• Great Hammerhead is 450.0x heavier than Scarlet Macaw.
• Scarlet Macaw lives longer (50 years vs 40 years).

Taxonomic Classification

Rank	Great Hammerhead	Scarlet Macaw
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Carcharhiniformes (Ground Sharks)	Psittaciformes (Parrots)
Family	Sphyrnidae (Hammerhead Sharks)	Psittacidae (True Parrots)
Genus	Sphyrna (Hammerhead Sharks)	Ara (Macaws)
Species	Sphyrna mokarran	Ara macao

Evolutionary Relationship

Great Hammerhead and Scarlet Macaw share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Great Hammerhead

CR — Critically Endangered

Trend: Decreasing ↓

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Great Hammerhead	Scarlet Macaw
Diet	Carnivore	Herbivore
Average Lifespan	40 years	50 years
Average Length	5.0 m	85 cm
Average Weight	450.0 kg	1.0 kg

Habitat & Geographic Range

Great Hammerhead

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 5 distinct biome types spanning the Indomalayan and Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Taiwan, and Venezuela. Currently classified as Critically 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.

Great Hammerhead

The largest hammerhead shark species, great hammerheads reach up to 6 meters and are found in tropical and subtropical coastal waters worldwide. Their distinctive T-shaped head (cephalofoil) dramatically increases sensory surface area for electroreception, enabling them to detect buried stingrays through sand with exceptional precision — stingrays are a preferred prey. Critically Endangered, with populations declining dramatically due to highly valued fins and bycatch mortality.

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:

🇨🇴 Colombia 🇻🇪 Venezuela