Common Shelduck vs Lesser Cachalot

Tadorna tadorna compared with Kogia breviceps

Key Differences

• Common Shelduck is Least Concern while Lesser Cachalot is Data Deficient.

Taxonomic Classification

Rank	Common Shelduck	Lesser Cachalot
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Anseriformes (Anseriformes)	Cetacea (Whales & Dolphins)
Family	Anatidae	Kogiidae
Genus	Tadorna	Kogia
Species	Tadorna tadorna	Kogia breviceps

Evolutionary Relationship

Common Shelduck and Lesser Cachalot share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Shelduck

LC — Least Concern

Lesser Cachalot

DD — Data Deficient

Physical Characteristics

Attribute	Common Shelduck	Lesser Cachalot
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Shelduck

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and Taiwan.

Lesser Cachalot

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, Portugal, Sweden, and Taiwan.

Common Shelduck

Common Shelduck (Tadorna tadorna) 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 2 countries:

🇸🇪 Sweden 🇹🇼 Taiwan