gray wolf vs White-tailed Tyrannulet

Canis lupus compared with Mecocerculus poecilocercus

Key Differences

• gray wolf is Critically Endangered while White-tailed Tyrannulet is Least Concern.

Taxonomic Classification

Rank	gray wolf	White-tailed Tyrannulet
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Aves (นก)
Order	Carnivora (สัตว์กินเนื้อ)	Passeriformes (นกเกาะคอน)
Family	Canidae (Dogs & Wolves)	Tyrannidae
Genus	Canis (Dogs & Wolves)	Mecocerculus
Species	Canis lupus	Mecocerculus poecilocercus

Evolutionary Relationship

gray wolf and White-tailed Tyrannulet share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

gray wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

White-tailed Tyrannulet

LC — Least Concern

Physical Characteristics

Attribute	gray wolf	White-tailed Tyrannulet
Diet	Carnivore	—
Average Lifespan	13 years	—
Average Length	1.6 m	—
Average Weight	45.0 kg	—

Habitat & Geographic Range

gray wolf

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, deserts and xeric shrublands, and tropical and subtropical dry broadleaf forests, among 13 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Seychelles), Asia (Japan), Europe (5 countries), North America (7 countries), Oceania and the Pacific (Marshall Islands, Vanuatu), and South America (5 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

White-tailed Tyrannulet

Habitat

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

Range

Distributed across Colombia, Ecuador, and Norway.

gray wolf

The most widely distributed wild canid, gray wolves range from North America across Eurasia in diverse habitats including tundra, forests, and grasslands. Highly social animals living in family packs led by a dominant breeding pair. As keystone predators, wolves regulate prey populations and profoundly shape ecosystem structure, as demonstrated by their reintroduction in Yellowstone. Once heavily persecuted, populations are recovering in many regions.

White-tailed Tyrannulet

White-tailed Tyrannulet (Mecocerculus poecilocercus) 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 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇳🇴 Norway