Climbing Bindweed vs Laysan Duck

Fallopia scandens compared with Anas laysanensis

Key Differences

Climbing Bindweed is Not Evaluated while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Climbing Bindweed	Laysan Duck
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Aves (Birds)
Order	Caryophyllales (Caryophyllales)	Anseriformes (Anseriformes)
Family	Polygonaceae	Anatidae
Genus	Fallopia	Anas
Species	Fallopia scandens	Anas laysanensis

Conservation Status

Climbing Bindweed

NE — Not Evaluated

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Climbing Bindweed	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Climbing Bindweed

Habitat

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

Range

Distributed across Canada, Norway, 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.

Climbing Bindweed

Climbing Bindweed, Calystegia sepium or related Convolvulus species in the family Convolvulaceae, is a vigorous twining perennial vine native to temperate regions of Europe, Asia, and North America, widely naturalized in disturbed habitats worldwide. The species climbs over hedgerows, fences, tall herbs, and shrubs by twining its flexible stems counterclockwise around supporting structures, sometimes smothering vegetation under dense leafy growth. The leaves are broadly arrow-shaped or hastate, and the funnel-shaped flowers are large, white to pale pink, and open during daylight hours. Like its relatives, Climbing Bindweed has deeply buried, extensively spreading rhizomes that are extremely difficult to eradicate once established. The extensive root system enables survival of herbicide treatments and mechanical disturbance, making the species a persistent weed in gardens, agricultural land, and riparian habitats. Despite its weedy character, the flowers provide nectar for bumblebees and are visited by hawk moths at dusk. The species is not threatened globally; it is considered common and often invasive across temperate regions. It has considerable cultural significance, appearing frequently in art and folklore as a symbol of persistence and entanglement.

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.