chestnut-leaf oak vs Laysan Duck

Quercus castaneifolia compared with Anas laysanensis

Key Differences

• chestnut-leaf oak is Near Threatened while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	chestnut-leaf oak	Laysan Duck
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Aves (Birds)
Order	Fagales (Beeches & Oaks)	Anseriformes (Anseriformes)
Family	Fagaceae (Beech Family)	Anatidae
Genus	Quercus (Oaks)	Anas
Species	Quercus castaneifolia	Anas laysanensis

Conservation Status

chestnut-leaf oak

NT — Near Threatened

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	chestnut-leaf oak	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

chestnut-leaf oak

Habitat

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

Range

Found in Brazil. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

chestnut-leaf oak

The chestnut-leaf oak (Quercus castaneifolia) is a species in the genus Quercus. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.