Devil's Bit vs Laysan Duck

Ruellia tuberosa compared with Anas laysanensis

Key Differences

• Devil's Bit is Not Evaluated while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Devil's Bit	Laysan Duck
Kingdom	Plantae (พืช)	Animalia (สัตว์)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (สัตว์มีแกนสันหลัง)
Class	Magnoliopsida (พืชใบเลี้ยงคู่)	Aves (นก)
Order	Lamiales (อันดับกะเพรา)	Anseriformes (อันดับห่าน)
Family	Acanthaceae	Anatidae
Genus	Ruellia	Anas
Species	Ruellia tuberosa	Anas laysanensis

Conservation Status

Devil's Bit

NE — Not Evaluated

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Devil's Bit	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Devil's Bit

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Africa (Congo (DRC), Seychelles), Asia (9 countries), North America (Bahamas, Cuba), Oceania and the Pacific (Australia, Palau), and South America (4 countries).

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.

Laysan Duck

Laysan Duck (Anas laysanensis) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.