cavernous crystalwort vs Red-billed Duck

Riccia cavernosa compared with Anas erythrorhyncha

Key Differences

• cavernous crystalwort is Endangered while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	cavernous crystalwort	Red-billed Duck
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Marchantiophyta (liverwort)	Chordata (Chordates)
Class	Marchantiopsida (Marchantiopsida)	Aves (Birds)
Order	Marchantiales (Marchantiales)	Anseriformes (Anseriformes)
Family	Ricciaceae	Anatidae
Genus	Riccia	Anas
Species	Riccia cavernosa	Anas erythrorhyncha

Conservation Status

cavernous crystalwort

EN — Endangered

Red-billed Duck

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

cavernous crystalwort

Habitat

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

Range

Widely distributed across Europe (6 countries), North America (United States), and South America (Brazil). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Red-billed Duck

Habitat

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

Range

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

cavernous crystalwort

The Cavernous crystalwort (Riccia cavernosa) is a species in the genus Riccia. It is currently classified as Endangered on the IUCN Red List. Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.

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 2 countries:

🇧🇪 Belgium 🇳🇴 Norway