American Robin vs Harpy Eagle
Turdus migratorius compared with Harpia harpyja
Side-by-Side Comparison
| Attribute | American Robin | Harpy Eagle |
|---|---|---|
| Scientific Name | Turdus migratorius | Harpia harpyja |
| Order | Passeriformes | Accipitriformes |
| Family | Turdidae | Accipitridae |
| Conservation Status | Least Concern | Vulnerable |
| Length | 25.0 cm (9.8 in) | 100.0 cm (39.4 in) |
| Wingspan | 36.0 cm (14.2 in) | 200.0 cm (78.7 in) |
| Weight | 77.0 g (2.72 oz) | 7500.0 g (264.55 oz) |
| Diet | Earthworms, insects, and fruit. Famously hunts earthworms on lawns by running, stopping, and tilting its … | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … |
| Clutch Size | 2-4 | 2-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
American Robin
Lawns, parks, gardens, farmland, and forest edges. One of the most familiar birds in suburban North America.
Harpy Eagle
Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.
Song & Call Comparison
American Robin
A clear, caroling song of 2-3 note phrases: 'cheerily, cheer-up, cheerio'. Sings from dawn perches. Sharp 'tut-tut-tut' alarm call and thin 'seeee' flight note.
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
American Robin
North America from Alaska and Canada to Mexico. Northern populations migrate south in winter; southern populations are largely resident.
Harpy Eagle
Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.
Conservation Status
American Robin
Harpy Eagle
How to Tell Them Apart
American Robin
Dark grey-brown upperparts with a warm brick-red breast and belly. White eye-ring and streaked white throat. Female slightly paler.
Bright yellow bill with a dark 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
American Robin
The American robin is widely regarded as a harbinger of spring across North America. Despite its name, it is a true thrush unrelated to the European robin. American robins produce two to three broods per year and are among the earliest birds to sing in the morning chorus.
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.