Emperor Penguin vs

Aptenodytes forsteri compared with Ensifer shofinae

Key Differences

• Emperor Penguin is Near Threatened while is Not Evaluated.

Taxonomic Classification

Rank	Emperor Penguin
Kingdom	Animalia (حيوانات)	Bacteria (Bacteria)
Phylum	Chordata (حبليات)	Proteobacteria (متقلبات)
Class	Aves (طيور)	Alphaproteobacteria (متقلبات ألفا)
Order	Sphenisciformes (بطريقيات)	Rhizobiales (مستجذريات)
Family	Spheniscidae (Penguins)	Rhizobiaceae
Genus	Aptenodytes (Great Penguins)	Ensifer
Species	Aptenodytes forsteri	Ensifer shofinae

Conservation Status

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

NE — Not Evaluated

Physical Characteristics

Attribute	Emperor Penguin
Diet	Carnivore	—
Average Lifespan	20 years	—
Average Length	1.1 m	—
Average Weight	40.0 kg	—

Habitat & Geographic Range

Emperor Penguin

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. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

Emperor Penguin

The world's largest penguin, emperor penguins stand up to 1.2 meters and weigh 45 kg, inhabiting the Antarctic continent in some of the most extreme conditions on Earth. They breed in midwinter darkness at temperatures below -60°C, with males incubating single eggs on their feet under a brood pouch for 65 days while females are at sea. Their huddling behavior — cycling individuals through the warm center of thousands-strong groups — is a masterclass in cooperative survival.

Ensifer shofinae is a nitrogen-fixing alphaproteobacterium in the family Rhizobiaceae, capable of forming symbiotic nodules on leguminous plant roots. Like other Ensifer species, it fixes atmospheric nitrogen in exchange for carbon compounds from its host plant, making it ecologically important in low-nitrogen soils. It was isolated from root nodules and characterized based on molecular and phenotypic traits.