Gaviota reidora vs Ballena azul

Chroicocephalus ridibundus compared with Balaenoptera musculus

Taxonomic Classification

Rank	Gaviota reidora	Ballena azul
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Aves (Birds)	Mammalia (mamíferos)
Order	Charadriiformes (Charadriiformes)	Cetacea (Whales & Dolphins)
Family	Laridae	Balaenopteridae (Rorquals)
Genus	Chroicocephalus	Balaenoptera (Rorquals)
Species	Chroicocephalus ridibundus	Balaenoptera musculus

Evolutionary Relationship

Gaviota reidora and Ballena azul share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Gaviota reidora

VU — Vulnerable

Ballena azul

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Gaviota reidora	Ballena azul
Diet	—	Carnivore
Average Lifespan	—	90 years
Average Length	—	30.0 m
Average Weight	—	150.0 t

Habitat & Geographic Range

Gaviota reidora

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.

Ballena azul

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

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

Gaviota reidora

Black-headed Gull (Chroicocephalus ridibundus) está clasificado como Vulnerable (VU) en la Lista Roja de la UICN. Enfrenta un alto riesgo de peligro en estado silvestre, con poblaciones en declive y presión creciente sobre su hábitat.

Ballena azul

El animal más grande que se conoce haya vivido en la Tierra; las ballenas azules pueden alcanzar 33 metros y 200 toneladas — sus corazones solos pesan tanto como un automóvil pequeño. Se encuentran en todos los océanos y migran entre las zonas de alimentación polares y las áreas de reproducción tropicales. Son filtradoras que consumen hasta 4 toneladas de kril al día. En peligro de extinción, con poblaciones globales estimadas entre 10.000 y 25.000 tras casi extinguirse por la caza de ballenas en el siglo XX.

Shared Countries

Both species can be found in 5 countries:

🇨🇴 Colombia 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan