ヒメハジロ vs Colombian Small-eared Shrew

Bucephala albeola compared with Cryptotis colombiana

Key Differences

• ヒメハジロ is Not Evaluated while Colombian Small-eared Shrew is Least Concern.

Taxonomic Classification

Rank	ヒメハジロ	Colombian Small-eared Shrew
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Aves (鳥類)	Mammalia (哺乳類)
Order	Anseriformes (カモ目)	Soricomorpha (トガリネズミ目)
Family	Anatidae	Soricidae
Genus	Bucephala	Cryptotis
Species	Bucephala albeola	Cryptotis colombiana

Evolutionary Relationship

ヒメハジロ and Colombian Small-eared Shrew share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

ヒメハジロ

NE — Not Evaluated

Colombian Small-eared Shrew

LC — Least Concern

Physical Characteristics

Attribute	ヒメハジロ	Colombian Small-eared Shrew
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

ヒメハジロ

Habitat

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

Range

Found across Europe (11 countries) and North America (United States).

Colombian Small-eared Shrew

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

ヒメハジロ

バフルヘッド（Bucephala albeola）はIUCNレッドリストで未評価（NE）に分類されています。まだIUCNレッドリストの基準に照らした評価が行われておらず、保全状況は未確定です。

Colombian Small-eared Shrew

<em>Cryptotis colombiana</em>, the Colombian small-eared shrew, is a diminutive insectivorous mammal belonging to the family Soricidae, endemic to Colombia. This species typically inhabits montane environments, including humid cloud forests and high-altitude grasslands known locally as páramo, where it forages actively through leaf litter and soil for invertebrate prey. Small-eared shrews of the genus <em>Cryptotis</em> are characterised by their notably reduced external ears, high metabolic rates, and nearly constant activity cycles driven by the energetic demands of maintaining body temperature. <em>Cryptotis colombiana</em> is currently assessed as Least Concern by the IUCN, suggesting that its population is relatively stable within its Colombian range. Despite this status, Andean shrews face ongoing pressures from land conversion, cattle grazing in páramo ecosystems, and climate-driven shifts in vegetation zones. The species contributes to soil aeration and invertebrate population regulation within its montane habitat. Biological traits of this species remain poorly documented in the scientific literature.