African Penguin vs Harpy Eagle
Spheniscus demersus compared with Harpia harpyja
Side-by-Side Comparison
| Attribute | African Penguin | Harpy Eagle |
|---|---|---|
| Scientific Name | Spheniscus demersus | Harpia harpyja |
| Order | Sphenisciformes | Accipitriformes |
| Family | Spheniscidae | Accipitridae |
| Conservation Status | Endangered | Vulnerable |
| Length | 60.0 cm (23.6 in) | 100.0 cm (39.4 in) |
| Wingspan | 42.0 cm (16.5 in) | 200.0 cm (78.7 in) |
| Weight | 3100.0 g (109.35 oz) | 7500.0 g (264.55 oz) |
| Diet | Small schooling fish, especially sardines and anchovies. Forages within 40 km of the colony, diving … | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … |
| Clutch Size | 2 | 2-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
African Penguin
Rocky coastlines and offshore islands of southern Africa. Nests in burrows, under boulders, or in surface scrapes.
Harpy Eagle
Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.
Song & Call Comparison
African Penguin
A loud, donkey-like braying 'waaah-waaah' — hence its nickname 'jackass penguin'. Also gives softer grunts and contact calls at the colony. Highly vocal on breeding beaches.
Harpy Eagle
Rarely heard; emits mournful whistled screams 'wheee-oo' and low croaking grunts near the nest. Vocalizations poorly documented given its remote Amazonian habitat.
Geographic Range & Migration
African Penguin
Coastal southwestern Africa from Namibia to Port Elizabeth, South Africa. The only penguin species breeding in Africa.
Harpy Eagle
Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.
Conservation Status
African Penguin
Harpy Eagle
How to Tell Them Apart
African Penguin
Black upperparts and white underparts with a distinctive black horseshoe-shaped band across the breast. Pink patches of bare skin above the eyes help with thermoregulation.
Sturdy, pointed, black bill with a grey band near the tip
Harpy Eagle
Slate-black upperparts and head with a pale grey breast and white underparts with black barring. A distinctive split grey crest rises when the bird is alarmed.
Massive dark hooked bill, one of the largest of any eagle
About These Birds
African Penguin
The African penguin is the only penguin species native to the African continent, also called the jackass penguin for its donkey-like braying call. Their population has plummeted over 95% since pre-industrial times due to egg collection, oil spills, and competition with commercial fisheries for sardine and anchovy stocks.
Harpy Eagle
The harpy eagle is among the most powerful raptors in the world, with talons as large as a grizzly bear's claws. It is the national bird of Panama. Deforestation poses the greatest threat to this species, as each breeding pair requires a vast territory of undisturbed forest.