Red-billed Duck vs

Anas erythrorhyncha compared with Sphacelaria tribuloides

Key Differences

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

Taxonomic Classification

Rank	Red-billed Duck
Kingdom	Animalia (Animals)	Chromista (Chromista)
Phylum	Chordata (Chordates)	Ochrophyta (Ochrophyta)
Class	Aves (Birds)	Phaeophyceae (Phaeophyceae)
Order	Anseriformes (Anseriformes)	Sphacelariales (Sphacelariales)
Family	Anatidae	Sphacelariaceae
Genus	Anas	Sphacelaria
Species	Anas erythrorhyncha	Sphacelaria tribuloides

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 Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Denmark, Norway, Portugal, and Taiwan.

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.

Sphacelaria tribuloides is a small, tufted brown alga forming compact cushion-like colonies on rocky substrates and larger algae. It inhabits intertidal and shallow subtidal rocky zones in temperate and tropical seas worldwide. This photosynthetic alga reproduces via characteristic star-shaped propagules and colonizes rocky marine surfaces.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway