Brown Cup vs Laysan Duck

Rutstroemia firma compared with Anas laysanensis

Key Differences

Brown Cup is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Brown Cup	Laysan Duck
Kingdom	Fungi (균계)	Animalia (동물)
Phylum	Ascomycota (자낭균류)	Chordata (척삭동물)
Class	Leotiomycetes (두건버섯강)	Aves (새)
Order	Helotiales (고무버섯목)	Anseriformes (기러기목)
Family	Rutstroemiaceae	Anatidae
Genus	Rutstroemia	Anas
Species	Rutstroemia firma	Anas laysanensis

Conservation Status

Brown Cup

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Brown Cup	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Cup

Habitat

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

Range

Distributed across Belgium, Brazil, Denmark, Norway, and Sweden.

Laysan Duck

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brown Cup

The Brown Cup (Rutstroemia firma) is a species in the genus Rutstroemia. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and South America, inhabiting ecosystems characteristic of the region.