นกทะเลขาเขียวธรรมดา vs Polar bear

Tringa nebularia compared with Ursus maritimus

Key Differences

นกทะเลขาเขียวธรรมดา is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	นกทะเลขาเขียวธรรมดา	Polar bear
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Aves (นก)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Charadriiformes (Charadriiformes)	Carnivora (สัตว์กินเนื้อ)
Family	Scolopacidae	Ursidae (Bears)
Genus	Tringa	Ursus (Bears)
Species	Tringa nebularia	Ursus maritimus

Evolutionary Relationship

นกทะเลขาเขียวธรรมดา and Polar bear share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

ดู: Phylum: Chordata

Conservation Status

นกทะเลขาเขียวธรรมดา

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	นกทะเลขาเขียวธรรมดา	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

นกทะเลขาเขียวธรรมดา

Habitat

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

Range

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

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

นกทะเลขาเขียวธรรมดา

<em>Tringa nebularia</em>, commonly known as the common greenshank, is a migratory wading bird belonging to the genus Tringa within the family Scolopacidae. This species occupies various aerial, terrestrial, and aquatic environments and has a documented range that includes Belgium, Denmark, Norway, Sweden, and Taiwan, reflecting its status as a long-distance migrant that breeds in northern Europe and winters across a broad range. Common greenshank is assessed as Least Concern on the IUCN Red List. The species is typically found along the edges of lakes, rivers, estuaries, and mudflats, where it forages for invertebrates and small fish using its slightly upturned bill. Biological traits of this species remain poorly documented in the scientific literature.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.