Allen’s Common Mustached Bat vs Common Eider

Pteronotus fuscus compared with Somateria mollissima

Key Differences

• Allen’s Common Mustached Bat is Least Concern while Common Eider is Near Threatened.

Taxonomic Classification

Rank	Allen’s Common Mustached Bat	Common Eider
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Chiroptera (Bats)	Anseriformes (Anseriformes)
Family	Mormoopidae	Anatidae
Genus	Pteronotus	Somateria
Species	Pteronotus fuscus	Somateria mollissima

Evolutionary Relationship

Allen’s Common Mustached Bat and Common Eider share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Allen’s Common Mustached Bat

LC — Least Concern

Common Eider

NT — Near Threatened

Physical Characteristics

Attribute	Allen’s Common Mustached Bat	Common Eider
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Allen’s Common Mustached Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Common Eider

Habitat

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

Range

Found across Europe (5 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Allen’s Common Mustached Bat

The Allen’s Common Mustached Bat (Pteronotus fuscus) is a species in the genus Pteronotus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Common Eider

Common Eider (Somateria mollissima) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.