Emperor Penguin vs Small Kidney Fern

Aptenodytes forsteri compared with Dryopteris napoleonis

Key Differences

• Emperor Penguin is Near Threatened while Small Kidney Fern is Endangered.

Taxonomic Classification

Rank	Emperor Penguin	Small Kidney Fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Aves (Birds)	Polypodiopsida (Polypodiopsida)
Order	Sphenisciformes (Penguins)	Polypodiales (Polypodiales)
Family	Spheniscidae (Penguins)	Dryopteridaceae
Genus	Aptenodytes (Great Penguins)	Dryopteris
Species	Aptenodytes forsteri	Dryopteris napoleonis

Conservation Status

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

Small Kidney Fern

EN — Endangered

Physical Characteristics

Attribute	Emperor Penguin	Small Kidney Fern
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.

Small Kidney Fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

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.