Asian Openbill vs Common Sundew

Anastomus oscitans compared with Drosera rotundifolia

Key Differences

Asian Openbill is Least Concern while Common Sundew is Vulnerable.

Taxonomic Classification

Rank	Asian Openbill	Common Sundew
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Magnoliopsida (Dicots)
Order	Ciconiiformes (Ciconiiformes)	Caryophyllales (Caryophyllales)
Family	Ciconiidae	Droseraceae
Genus	Anastomus	Drosera
Species	Anastomus oscitans	Drosera rotundifolia

Conservation Status

Asian Openbill

LC — Least Concern

Common Sundew

VU — Vulnerable

Physical Characteristics

Attribute	Asian Openbill	Common Sundew
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Asian Openbill

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway.

Common Sundew

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (8 countries), and North America (Canada, United States). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Asian Openbill

The Asian Openbill (Anastomus oscitans) is a species in the genus Anastomus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments. Found in Norway.

Common Sundew

<em>Drosera rotundifolia</em>, the common sundew, is a carnivorous flowering plant in the family Droseraceae, order Caryophyllales. It has a broad distribution spanning Europe, Asia, and North America, typically growing in sphagnum bogs, wet heathlands, and other nutrient-poor, acidic wetland habitats where it compensates for low soil nutrient availability by trapping and digesting insects. The round leaves bear red, glandular tentacles tipped with sticky mucilage that immobilize prey, which is then digested by enzymes secreted from the leaf surface. <em>Drosera rotundifolia</em> produces small white flowers on a slender scape, pollinated by insects. It plays a minor but ecologically interesting role in controlling insect populations within its boggy habitat. Biological traits including typical individual lifespan, precise leaf dimensions, and detailed prey composition remain poorly documented. The species is assessed as Vulnerable by the IUCN, reflecting significant population declines across much of its range driven primarily by drainage and destruction of peatland habitats, atmospheric nitrogen deposition, and climate change altering the hydrology of bog ecosystems. Effective peatland conservation is critical for the long-term survival of this species.