Corrugated Salamander vs Red-billed Duck

Isthmura corrugata compared with Anas erythrorhyncha

Key Differences

• Corrugated Salamander is Critically Endangered while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Corrugated Salamander	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Aves (Birds)
Order	Caudata (Caudata)	Anseriformes (Anseriformes)
Family	Plethodontidae	Anatidae
Genus	Isthmura	Anas
Species	Isthmura corrugata	Anas erythrorhyncha

Evolutionary Relationship

Corrugated Salamander and Red-billed Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Corrugated Salamander

CR — Critically Endangered

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Corrugated Salamander	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Corrugated Salamander

Habitat

Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

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

Red-billed Duck

Habitat

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

Range

Found across Europe (6 countries) and South America (Ecuador).

Red-billed Duck

Red-billed Duck (Anas erythrorhyncha) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.