Common hammerhead vs Yellow-billed Pintail

Sphyrna zygaena compared with Anas georgica

Key Differences

• Common hammerhead is Not Evaluated while Yellow-billed Pintail is Endangered.

Taxonomic Classification

Rank	Common hammerhead	Yellow-billed Pintail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Carcharhiniformes (Ground Sharks)	Anseriformes (Anseriformes)
Family	Sphyrnidae (Hammerhead Sharks)	Anatidae
Genus	Sphyrna (Hammerhead Sharks)	Anas
Species	Sphyrna zygaena	Anas georgica

Evolutionary Relationship

Common hammerhead and Yellow-billed Pintail share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common hammerhead

NE — Not Evaluated

Yellow-billed Pintail

EN — Endangered

Physical Characteristics

Attribute	Common hammerhead	Yellow-billed Pintail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common hammerhead

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Distributed across Chile, Denmark, Portugal, Sweden, and Taiwan.

Yellow-billed Pintail

Habitat

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

Range

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

Common hammerhead

The common hammerhead, <em>Sphyrna zygaena</em>, is a cartilaginous fish belonging to the order Carcharhiniformes, family Sphyrnidae. This species is typically found in marine environments and has a distribution that includes the waters of Chile, Denmark, Portugal, Sweden, and Taiwan, reflecting a wide range across both Atlantic and Pacific Ocean systems. As a hammerhead shark, <em>Sphyrna zygaena</em> possesses the characteristic cephalofoil, the laterally expanded head structure that provides enhanced sensory capabilities and hydrodynamic benefits. Hammerhead sharks are generally known to be active, wide-ranging predators within marine ecosystems. No dietary information has been provided for this specific species in current records. Biological traits of this species remain poorly documented in the scientific literature.

Yellow-billed Pintail

Yellow-billed Pintail (Anas georgica) 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.