Black Swan vs common greasewort

Cygnus atratus compared with Aneura pinguis

Key Differences

• Black Swan is Not Evaluated while common greasewort is Least Concern.

Taxonomic Classification

Rank	Black Swan	common greasewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Marchantiophyta (liverwort)
Class	Aves (Birds)	Jungermanniopsida (Jungermanniopsida)
Order	Anseriformes (Anseriformes)	Metzgeriales (Metzgeriales)
Family	Anatidae	Aneuraceae
Genus	Cygnus	Aneura
Species	Cygnus atratus	Aneura pinguis

Conservation Status

Black Swan

NE — Not Evaluated

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	Black Swan	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Swan

Habitat

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

Range

Widely distributed across Asia (Japan, Taiwan, United Arab Emirates), Europe (21 countries), Oceania and the Pacific (New Zealand), and South America (Argentina, Colombia, Ecuador).

common greasewort

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Colombia).

Black Swan

Black Swan (Cygnus atratus) is classified as Not Evaluated (NE) on the IUCN Red List. Not yet evaluated against IUCN Red List criteria. Conservation status remains to be determined.

common greasewort

<em>Aneura pinguis</em>, commonly known as common greasewort, is a liverwort belonging to the genus Aneura within the family Aneuraceae. This cryptogamic plant inhabits ecosystems across Asia, Europe, and North America, thriving in moist or waterlogged environments. Its range encompasses Taiwan in Asia, six European countries, the United States in North America, and Brazil and Colombia in South America, indicating a broad geographic distribution across multiple continents. Common greasewort is assessed as Least Concern on the IUCN Red List. The species typically forms flat, ribbon-like thalli in damp habitats such as stream banks, wet rocks, and boggy ground. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇨🇴 Colombia 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan