Darwin s Nesoryzomys vs Ring-necked Duck

Nesoryzomys darwini compared with Aythya collaris

Key Differences

• Darwin s Nesoryzomys is Extinct while Ring-necked Duck is Least Concern.

Taxonomic Classification

Rank	Darwin s Nesoryzomys	Ring-necked Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Anseriformes (Anseriformes)
Family	Cricetidae	Anatidae
Genus	Nesoryzomys	Aythya
Species	Nesoryzomys darwini	Aythya collaris

Evolutionary Relationship

Darwin s Nesoryzomys and Ring-necked Duck share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Darwin s Nesoryzomys

EX — Extinct

Ring-necked Duck

LC — Least Concern

Physical Characteristics

Attribute	Darwin s Nesoryzomys	Ring-necked Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Darwin s Nesoryzomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

Ring-necked Duck

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Ring-necked Duck

Ring-necked Duck (Aythya collaris) 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.

Shared Countries

Both species can be found in 1 countries:

🇪🇨 Ecuador