Black-headed Gull vs Little Black Serotine

Chroicocephalus ridibundus compared with Eptesicus andinus

Key Differences

• Black-headed Gull is Vulnerable while Little Black Serotine is Least Concern.

Taxonomic Classification

Rank	Black-headed Gull	Little Black Serotine
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Charadriiformes (Charadriiformes)	Chiroptera (Bats)
Family	Laridae	Vespertilionidae
Genus	Chroicocephalus	Eptesicus
Species	Chroicocephalus ridibundus	Eptesicus andinus

Evolutionary Relationship

Black-headed Gull and Little Black Serotine share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-headed Gull

VU — Vulnerable

Little Black Serotine

LC — Least Concern

Physical Characteristics

Attribute	Black-headed Gull	Little Black Serotine
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-headed Gull

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Venezuela). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Little Black Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Black-headed Gull

Black-headed Gull (Chroicocephalus ridibundus) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela