Colimbo mayor vs Colimbo de Adams

Gavia immer compared with Gavia adamsii

Key Differences

• Colimbo mayor is Not Evaluated while Colimbo de Adams is Near Threatened.

Taxonomic Classification

Rank	Colimbo mayor	Colimbo de Adams
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Aves (Birds)	Aves (Birds)
Order same	Gaviiformes (Gaviiformes)	Gaviiformes (Gaviiformes)
Family same	Gaviidae	Gaviidae
Genus same	Gavia	Gavia
Species	Gavia immer	Gavia adamsii

Evolutionary Relationship

Colimbo mayor and Colimbo de Adams share a common ancestor at the Genus level: Gavia.

Conservation Status

Colimbo mayor

NE — Not Evaluated

Colimbo de Adams

NT — Near Threatened

Physical Characteristics

Attribute	Colimbo mayor	Colimbo de Adams
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colimbo mayor

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Colimbo de Adams

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Colimbo mayor

<em>Gavia immer</em>, the common loon or great northern diver, is a large aquatic bird in the family Gaviidae, known for its haunting, yodeling calls across northern lakes. It is found in Belgium, Denmark, Norway, Sweden, and the United States, breeding on freshwater lakes in boreal and subarctic regions and wintering along marine coastlines. The common loon is adept in aerial, terrestrial, and aquatic environments, though it is most highly specialized for diving, using its strong feet positioned far back on its body to pursue fish underwater. It typically feeds on fish, supplemented by crustaceans and aquatic invertebrates. Its striking summer plumage features a black-and-white checkered back and a deep black head with a characteristic white necklace pattern. The species has not been evaluated for IUCN conservation status. Common loons require clear, fish-rich lakes for successful breeding and are sensitive to water quality degradation and human disturbance at nesting sites. Their distinctive calls are emblematic of wilderness in North America and Scandinavia.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden