Gray rupturewort vs Laysan Duck

Herniaria incana compared with Anas laysanensis

Key Differences

• Gray rupturewort is Extinct while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Gray rupturewort	Laysan Duck
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Aves (Birds)
Order	Caryophyllales (Caryophyllales)	Anseriformes (Anseriformes)
Family	Caryophyllaceae	Anatidae
Genus	Herniaria	Anas
Species	Herniaria incana	Anas laysanensis

Conservation Status

Gray rupturewort

EX — Extinct

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Gray rupturewort	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray rupturewort

Habitat

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

Range

Distributed across Czech Republic, Poland, and United States.

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.