Ko`oko`olau vs Laysan Duck

Bidens campylotheca compared with Anas laysanensis

Key Differences

• Ko`oko`olau is Vulnerable while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Ko`oko`olau	Laysan Duck
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Aves (Birds)
Order	Asterales (Daisies & Sunflowers)	Anseriformes (Anseriformes)
Family	Asteraceae (Daisy Family)	Anatidae
Genus	Bidens	Anas
Species	Bidens campylotheca	Anas laysanensis

Conservation Status

Ko`oko`olau

VU — Vulnerable

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Ko`oko`olau	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ko`oko`olau

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Turkey. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.