Harpy Eagle vs Shoebill
Harpia harpyja compared with Balaeniceps rex
Side-by-Side Comparison
| Attribute | Harpy Eagle | Shoebill |
|---|---|---|
| Scientific Name | Harpia harpyja | Balaeniceps rex |
| Order | Accipitriformes | Pelecaniformes |
| Family | Accipitridae | Balaenicipitidae |
| Conservation Status | Vulnerable | Vulnerable |
| Length | 100.0 cm (39.4 in) | 120.0 cm (47.2 in) |
| Wingspan | 200.0 cm (78.7 in) | 240.0 cm (94.5 in) |
| Weight | 7500.0 g (264.55 oz) | 5500.0 g (194.01 oz) |
| Diet | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … | Primarily lungfish, also catfish, water snakes, monitor lizards, and baby crocodiles. Hunts by standing motionless, … |
| Clutch Size | 2-3 | 1-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Harpy Eagle
Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.
Shoebill
Freshwater swamps dominated by papyrus and other dense aquatic vegetation in tropical East Africa.
Song & Call Comparison
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.
Shoebill
Largely silent; produces mechanical bill-clattering 'clap-clap-clap' when greeting at the nest — similar to White Stork. Also gives low croaking grunts. Rarely calls in the wild.
Geographic Range & Migration
Harpy Eagle
Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.
Shoebill
Central and East Africa from South Sudan and Ethiopia south to Zambia. Largest populations in South Sudan and Uganda.
Conservation Status
Harpy Eagle
Shoebill
How to Tell Them Apart
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
Shoebill
Blue-grey plumage overall with a slightly darker back and wings. Powder down gives a washed-out appearance. Small tuft on the back of the head.
Massive shoe-shaped bill, one of the largest of any bird — pale yellowish-grey with darker markings
About These Birds
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.
Shoebill
The shoebill is one of the most sought-after birds for birdwatchers visiting Africa, prized for its prehistoric appearance and massive bill. It can stand motionless for hours before collapsing forward to seize prey in its enormous bill. Despite standing over a meter tall, shoebills weigh relatively little due to their hollow bones.