crested arrowhead vs Laysan Duck

Sagittaria cristata compared with Anas laysanensis

Key Differences

• crested arrowhead is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	crested arrowhead	Laysan Duck
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Liliopsida (Monocots)	Aves (Birds)
Order	Alismatales (Alismatales)	Anseriformes (Anseriformes)
Family	Alismataceae	Anatidae
Genus	Sagittaria	Anas
Species	Sagittaria cristata	Anas laysanensis

Conservation Status

crested arrowhead

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	crested arrowhead	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

crested arrowhead

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Found in Canada.

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.