Gregg's Stream Frog vs Laysan Duck

Craugastor greggi compared with Anas laysanensis

Key Differences

• Gregg's Stream Frog is Endangered while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Gregg's Stream Frog	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	Craugastoridae	Anatidae
Genus	Craugastor	Anas
Species	Craugastor greggi	Anas laysanensis

Evolutionary Relationship

Gregg's Stream Frog and Laysan Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gregg's Stream Frog

EN — Endangered

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Gregg's Stream Frog	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gregg's Stream Frog

Habitat

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

Range

Found in Mexico. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.