Campbell Islands Teal vs Colombian Small-eared Shrew

Anas nesiotis compared with Cryptotis colombiana

Key Differences

• Campbell Islands Teal is Vulnerable while Colombian Small-eared Shrew is Least Concern.

Taxonomic Classification

Rank	Campbell Islands Teal	Colombian Small-eared Shrew
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Aves (นก)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Anseriformes (อันดับห่าน)	Soricomorpha (อันดับตุ่น)
Family	Anatidae	Soricidae
Genus	Anas	Cryptotis
Species	Anas nesiotis	Cryptotis colombiana

Evolutionary Relationship

Campbell Islands Teal and Colombian Small-eared Shrew share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Campbell Islands Teal

VU — Vulnerable

Colombian Small-eared Shrew

LC — Least Concern

Physical Characteristics

Attribute	Campbell Islands Teal	Colombian Small-eared Shrew
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Campbell Islands Teal

Habitat

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

Range

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

Colombian Small-eared Shrew

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Campbell Islands Teal

The Campbell Islands Teal (Anas nesiotis) is a species in the genus Anas. It is currently classified as Vulnerable on the IUCN Red List. Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.