African Black Duck vs Common Nut Clam

Anas sparsa compared with Nuculana pernula

Key Differences

• African Black Duck is Least Concern while Common Nut Clam is Vulnerable.

Taxonomic Classification

Rank	African Black Duck	Common Nut Clam
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Aves (Birds)	Bivalvia (Bivalvia)
Order	Anseriformes (Anseriformes)	Nuculanida (Nuculanida)
Family	Anatidae	Nuculanidae
Genus	Anas	Nuculana
Species	Anas sparsa	Nuculana pernula

Evolutionary Relationship

African Black Duck and Common Nut Clam share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

African Black Duck

LC — Least Concern

Common Nut Clam

VU — Vulnerable

Physical Characteristics

Attribute	African Black Duck	Common Nut Clam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

African Black Duck

Habitat

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

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom.

Common Nut Clam

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

African Black Duck

The African Black Duck (Anas sparsa) is a species in the genus Anas. It is currently classified as Least Concern on the IUCN Red List. This species inhabits Typically found in various aerial, terrestrial, and aquatic environments, found across Belgium, France, Netherlands, Norway, and United Kingdom.

Common Nut Clam

<em>Nuculana pernula</em>, sometimes referred to as a nut clam, is a small marine bivalve mollusk in the family Nuculanidae, part of the subclass Protobranchia. Like other protobranchs, <em>Nuculana pernula</em> is a deposit feeder that typically burrows into fine-grained marine sediments, using its palp proboscides to gather organic detritus and microorganisms from surface sediment layers. It typically inhabits subtidal and deep-water soft-bottom habitats along cold-temperate and boreal Atlantic coasts, with documented occurrences in Denmark, Norway, and Sweden. The species is currently assessed as Vulnerable by the IUCN, indicating that it faces a higher level of extinction risk than related species, potentially reflecting sensitivity to habitat degradation, bottom trawling disturbance, and shifts in sediment quality. Biological traits such as lifespan, body size, and diet remain poorly documented at a standardized population level for this species. <em>Nuculana pernula</em> contributes to benthic ecosystem function through sediment bioturbation and organic matter processing, and its Vulnerable status highlights the importance of protecting deep-sea and subtidal soft-sediment habitats from physical disturbance.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway