Opposite Stonewort vs Red-billed Duck

Chara contraria compared with Anas erythrorhyncha

Key Differences

• Opposite Stonewort is Near Threatened while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Opposite Stonewort	Red-billed Duck
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Charophyta (Charophyta)	Chordata (Chordates)
Class	Charophyceae (Charophyceae)	Aves (Birds)
Order	Charales (Charales)	Anseriformes (Anseriformes)
Family	Characeae	Anatidae
Genus	Chara	Anas
Species	Chara contraria	Anas erythrorhyncha

Conservation Status

Opposite Stonewort

NT — Near Threatened

Red-billed Duck

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

Opposite Stonewort

Habitat

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

Range

Distributed across Denmark, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Red-billed Duck

Habitat

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

Range

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

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway