common blow flie vs Polar bear

Calliphora vicina compared with Ursus maritimus

Key Differences

• common blow flie is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	common blow flie	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Diptera (Diptera)	Carnivora (Carnivorans)
Family	Calliphoridae	Ursidae (Bears)
Genus	Calliphora	Ursus (Bears)
Species	Calliphora vicina	Ursus maritimus

Evolutionary Relationship

common blow flie and Polar bear share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

common blow flie

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

common blow flie

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Africa (South Africa), Europe (5 countries), and North America (United States).

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.

common blow flie

The common blow fly (<em>Calliphora vicina</em>) is a large, metallic-blue fly belonging to the family Calliphoridae. It is classified as Least Concern on the IUCN Red List and has been recorded across terrestrial and freshwater habitats in Africa, including South Africa, as well as across five European countries and the United States. <em>Calliphora vicina</em> is one of the most familiar blow fly species in temperate regions, often found around human settlements, carrion, and organic waste. It plays an important ecological role as an early colonizer of decomposing animal matter, and its predictable developmental stages make it a key species in forensic entomology for estimating post-mortem intervals. Adults typically feed on nectar, pollen, and decaying matter, while larvae develop in carrion or, occasionally, in wounds. The species is cold-tolerant and often active during cool weather when other blow flies are less abundant. 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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway