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Side-by-Side Comparison

Attribute	Harpy Eagle	Booted Eagle
Scientific Name	Harpia harpyja	Hieraaetus pennatus
Order	Accipitriformes	Accipitriformes
Family	Accipitridae	Accipitridae
Conservation Status	Vulnerable	Least Concern
Length	100.0 cm (39.4 in)	—
Wingspan	200.0 cm (78.7 in)	72.4 cm (28.5 in)
Weight	7500.0 g (264.55 oz)	842.5 g (29.72 oz)
Diet	Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. …	--
Clutch Size	2-3	1-3
Population Trend	—	—

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Size Comparison

Body Length

Harpy Eagle 100.0 cm

Booted Eagle —

Wingspan

Harpy Eagle 200.0 cm

Booted Eagle 72.4 cm

Weight

Harpy Eagle 7500.0 g

Booted Eagle 842.5 g

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Habitat Comparison

Shared Habitats

🌲 Forest

Harpy Eagle only

None

Booted Eagle only

None

Harpy Eagle

Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.

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Song & Call Comparison

Harpy Eagle

Song

Rarely heard; emits mournful whistled screams 'wheee-oo' and low croaking grunts near the nest. Vocalizations poorly documented given its remote Amazonian habitat.

Booted Eagle

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Geographic Range & Migration

Harpy Eagle

Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.

Booted Eagle

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Conservation Status

Vulnerable

Harpy Eagle

Least Concern

Booted Eagle

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How to Tell Them Apart

Harpy Eagle

Plumage

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.

Bill

Massive dark hooked bill, one of the largest of any eagle

Booted Eagle

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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.

Booted Eagle

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Related Comparisons

Golden Eagle vs Harpy Eagle

same-family

Harpy Eagle vs White-tailed Eagle

same-family

Red-tailed Hawk vs Harpy Eagle

same-family

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