Mergo mayor vs Mergo copetón

Mergus merganser compared with Mergus serrator

Taxonomic Classification

Rank	Mergo mayor	Mergo copetón
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Aves (Birds)	Aves (Birds)
Order same	Anseriformes (Anseriformes)	Anseriformes (Anseriformes)
Family same	Anatidae	Anatidae
Genus same	Mergus	Mergus
Species	Mergus merganser	Mergus serrator

Evolutionary Relationship

Mergo mayor and Mergo copetón share a common ancestor at the Genus level: Mergus.

Conservation Status

Mergo mayor

LC — Least Concern

Mergo copetón

LC — Least Concern

Physical Characteristics

Attribute	Mergo mayor	Mergo copetón
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Mergo mayor

Habitat

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

Range

Found across Europe (5 countries) and North America (United States).

Mergo copetón

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), North America (United States), and South America (Colombia).

Mergo mayor

<em>Mergus merganser</em>, the common merganser or goosander, is a large diving duck in the family Anatidae, broadly distributed across Europe and North America. It is classified as Least Concern on the IUCN Red List. This species is capable of aerial, terrestrial, and aquatic locomotion, but is most specialized for underwater pursuit of prey. The common merganser is typically piscivorous, diving in clear, fast-flowing rivers and lakes to catch fish using its serrated bill, which provides a firm grip on slippery prey. Males display striking breeding plumage with a dark green head, white body, and red bill, while females are grey with a rusty-brown head and crested nape. The species nests in tree cavities, cliff ledges, and artificial nest boxes near freshwater habitats. It requires clean, well-oxygenated rivers and lakes for foraging, making it sensitive to water quality degradation and overfishing of prey species. Common mergansers are migratory in northern parts of their range, moving to coastal and ice-free inland waters during winter months.

Mergo copetón

El serreta mediana (Mergus serrator) esta clasificada como Preocupacion Menor (LC) en la Lista Roja de la UICN. Es una especie ampliamente distribuida y abundante en su area de distribucion, con poblaciones estables y sin preocupaciones inmediatas de conservacion.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States