Chalky Macoma vs Noctule

Macoma calcarea compared with Nyctalus noctula

Key Differences

• Chalky Macoma is Least Concern while Noctule is Vulnerable.

Taxonomic Classification

Rank	Chalky Macoma	Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Cardiida (Cardiida)	Chiroptera (Bats)
Family	Tellinidae	Vespertilionidae
Genus	Macoma	Nyctalus
Species	Macoma calcarea	Nyctalus noctula

Evolutionary Relationship

Chalky Macoma and Noctule share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Chalky Macoma

LC — Least Concern

Noctule

VU — Vulnerable

Physical Characteristics

Attribute	Chalky Macoma	Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chalky Macoma

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

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

Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Chalky Macoma

The Chalky Macoma (Macoma calcarea) is a species in the genus Macoma. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Noctule

Noctule (Nyctalus noctula) 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 4 countries:

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