Red-billed Duck vs

Anas erythrorhyncha compared with Stephanoeca kentii

Key Differences

• Red-billed Duck is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Red-billed Duck
Kingdom	Animalia (Animals)	Protozoa (protozoa)
Phylum	Chordata (Chordates)	Choanozoa (Choanozoa)
Class	Aves (Birds)	Choanoflagellatea (Choanoflagellatea)
Order	Anseriformes (Anseriformes)	Choanoflagellida (Choanoflagellida)
Family	Anatidae	Acanthoecidae
Genus	Anas	Stephanoeca
Species	Anas erythrorhyncha	Stephanoeca kentii

Conservation Status

Red-billed Duck

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Red-billed Duck

Habitat

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

Range

Found across Europe (6 countries) and South America (Ecuador).

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Red-billed Duck

Red-billed Duck (Anas erythrorhyncha) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Stephanoeca kentii is a loricate choanoflagellate, a marine unicellular organism that constructs a delicate basket-like structure (lorica) of siliceous strips surrounding its cell. It inhabits coastal and oceanic waters where it feeds on picoplankton bacteria. Choanoflagellates like this species are of scientific interest as the closest living unicellular relatives of animals.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway