Emperor Penguin vs Great Horned Owl
Aptenodytes forsteri compared with Bubo virginianus
Side-by-Side Comparison
| Attribute | Emperor Penguin | Great Horned Owl |
|---|---|---|
| Scientific Name | Aptenodytes forsteri | Bubo virginianus |
| Order | Sphenisciformes | Strigiformes |
| Family | Spheniscidae | Strigidae |
| Conservation Status | Near Threatened | Least Concern |
| Length | 115.0 cm (45.3 in) | 55.0 cm (21.7 in) |
| Wingspan | 76.0 cm (29.9 in) | 127.0 cm (50.0 in) |
| Weight | 30000.0 g (1058.22 oz) | 1400.0 g (49.38 oz) |
| Diet | Primarily Antarctic silverfish, krill, and squid. The deepest-diving bird, reaching depths over 500 meters and … | Extremely diverse — mammals (rabbits, skunks, rodents), birds (including other raptors), reptiles, amphibians, and fish. … |
| Clutch Size | 1 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Shared Habitats
Emperor Penguin only
None
Emperor Penguin
Antarctic pack ice and surrounding Southern Ocean. The only penguin species that breeds during the Antarctic winter.
Great Horned Owl
Diverse habitats including forests, deserts, swamps, urban parks, and suburban areas. Nests in tree hollows, cliff ledges, and abandoned nests of other large birds.
Song & Call Comparison
Emperor Penguin
Loud, resonant trumpeting calls used for individual recognition in dense colonies. Each bird's call is unique in frequency. Also gives softer contact 'braying' notes.
Great Horned Owl
Deep, resonant 'who-who-who-who-ooo': the classic 'hoo-h'HOO-hoo-hoo' territorial duet of a mated pair. Booms at dusk. Female pitch slightly higher than male.
Geographic Range & Migration
Emperor Penguin
Antarctic continent and surrounding sea ice. Breeding colonies are found along the entire Antarctic coastline.
Great Horned Owl
North and South America from subarctic Canada to Tierra del Fuego. One of the most widespread owls in the Americas.
Conservation Status
Emperor Penguin
Great Horned Owl
How to Tell Them Apart
Emperor Penguin
Black head, chin, and dorsal side with white belly. Bright yellow-orange ear patches fade to pale yellow on the upper breast.
Long, slightly decurved bill — black with orange or pink mandible stripe
Great Horned Owl
Mottled grey-brown plumage with heavy dark barring. Prominent ear tufts, yellow eyes, and a white throat patch give a fierce expression.
Dark grey-black hooked bill almost hidden by facial disc feathers
About These Birds
Emperor Penguin
The emperor penguin is the tallest and heaviest of all penguin species. They breed in the harshest conditions on Earth, enduring Antarctic winter temperatures of -60 C and wind speeds of 200 km/h. Males incubate the single egg on their feet under a brood pouch for about 65 days while fasting.
Great Horned Owl
The great horned owl is the most powerful and widespread owl in the Americas, earning the nickname tiger of the sky. It is one of the earliest nesting birds, often laying eggs in January when snow still covers the ground. Great horned owls are fierce predators, regularly taking prey up to three times their own weight.