Brown Treefrog vs Laysan Duck

Buergeria robusta compared with Anas laysanensis

Key Differences

• Brown Treefrog is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Brown Treefrog	Laysan Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Aves (Birds)
Order	Anura (Frogs & Toads)	Anseriformes (Anseriformes)
Family	Rhacophoridae	Anatidae
Genus	Buergeria	Anas
Species	Buergeria robusta	Anas laysanensis

Evolutionary Relationship

Brown Treefrog and Laysan Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Treefrog

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Brown Treefrog	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Treefrog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Taiwan.

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.

Brown Treefrog

The Brown Treefrog (Buergeria robusta) is a species in the genus Buergeria. It is currently classified as Least Concern on the IUCN Red List. Typically found in freshwater habitats, moist forests, and wetlands.

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.