Delfín de Commerson vs Charrán común

Cephalorhynchus commersonii compared with Sterna hirundo

Key Differences

• Delfín de Commerson is Least Concern while Charrán común is Endangered.

Taxonomic Classification

Rank	Delfín de Commerson	Charrán común
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Mammalia (mamíferos)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Charadriiformes (Charadriiformes)
Family	Delphinidae (Oceanic Dolphins)	Laridae
Genus	Cephalorhynchus	Sterna
Species	Cephalorhynchus commersonii	Sterna hirundo

Evolutionary Relationship

Delfín de Commerson and Charrán común share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Delfín de Commerson

LC — Least Concern

Charrán común

EN — Endangered

Physical Characteristics

Attribute	Delfín de Commerson	Charrán común
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Delfín de Commerson

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Charrán común

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Delfín de Commerson

<em>Cephalorhynchus commersonii</em>, commonly known as Commerson's Dolphin, is a small cetacean in the family Delphinidae. This species is classified as Least Concern on the IUCN Red List and is notable for its striking black-and-white coloration, which makes it one of the most visually distinctive dolphin species. Commerson's Dolphins typically inhabit coastal and nearshore marine environments of the Southern Hemisphere, particularly around the Falkland Islands, the southern tip of South America, and a geographically isolated population near the Kerguelen Islands in the Indian Ocean. These dolphins are highly social animals, often observed in small groups engaging in acrobatic behaviors near the surface. They typically feed on fish, squid, and crustaceans, often hunting cooperatively in shallow waters and kelp beds. Their average lifespan is approximately 18 years, and they are known for their fast, energetic swimming. Commerson's Dolphins are sometimes caught as bycatch in fishing nets, posing a localized conservation concern despite their overall Least Concern status.

Charrán común

El charrán común (Sterna hirundo) está clasificado como En Peligro (EN) en la Lista Roja de la UICN. En alto riesgo de extinción en estado silvestre, con un significativo declive poblacional y amenazas continuas a su supervivencia.