Pitted Beard Lichen vs Red-billed Duck

Usnea cavernosa compared with Anas erythrorhyncha

Key Differences

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

Taxonomic Classification

Rank	Pitted Beard Lichen	Red-billed Duck
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Lecanoromycetes (Lecanoromycetes)	Aves (Birds)
Order	Lecanorales (Lecanorales)	Anseriformes (Anseriformes)
Family	Parmeliaceae	Anatidae
Genus	Usnea	Anas
Species	Usnea cavernosa	Anas erythrorhyncha

Conservation Status

Pitted Beard Lichen

NE — Not Evaluated

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Pitted Beard Lichen	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Pitted Beard Lichen

Habitat

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

Range

Distributed across Norway and United States.

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