Hector’s Beaked Whale vs Ruff

Mesoplodon hectori compared with Calidris pugnax

Key Differences

• Hector’s Beaked Whale is Data Deficient while Ruff is Least Concern.

Taxonomic Classification

Rank	Hector’s Beaked Whale	Ruff
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Aves (鳥類)
Order	Cetacea (Whales & Dolphins)	Charadriiformes (チドリ目)
Family	Hyperoodontidae	Scolopacidae
Genus	Mesoplodon	Calidris
Species	Mesoplodon hectori	Calidris pugnax

Evolutionary Relationship

Hector’s Beaked Whale and Ruff share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Hector’s Beaked Whale

DD — Data Deficient

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Hector’s Beaked Whale	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hector’s Beaked Whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Ruff

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Venezuela).

Ruff

Ruff（Calidris pugnax）は IUCN レッドリストで軽度懸念（LC）に分類されている。分布域全体に広く分布し個体数も豊富で、個体群は安定しており差し迫った保全上の懸念はない。