Blue Jay vs Южноамериканская гарпия
Cyanocitta cristata в сравнении с Harpia harpyja
Side-by-Side Comparison
| Характеристика | Blue Jay | Южноамериканская гарпия |
|---|---|---|
| Научное название | Cyanocitta cristata | Harpia harpyja |
| Отряд | Passeriformes | Accipitriformes |
| Семейство | Corvidae | Accipitridae |
| Охранный статус | Least Concern | Vulnerable |
| Длина | 28,0 cm (11.0 in) | 100,0 cm (39.4 in) |
| Размах крыльев | 42,0 cm (16.5 in) | 200,0 cm (78.7 in) |
| Масса | 87,0 g (3.07 oz) | 7500,0 g (264.55 oz) |
| Питание | Omnivorous — nuts (especially acorns), seeds, berries, insects, and occasionally eggs or nestlings of other … | Arboreal mammals including sloths, monkeys, and opossums, which make up over 70% of the diet. … |
| Размер кладки | 2-7 | 2-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Blue Jay
Deciduous and mixed forests, parks, and suburban areas. Highly adaptable to human-modified landscapes.
Южноамериканская гарпия
Tropical lowland rainforests, requiring large tracts of continuous forest with tall emergent trees for nesting.
Song & Call Comparison
Blue Jay
A harsh, ringing 'jaay-jaay-jaay'. Also mimics Red-tailed Hawk and other species convincingly. Gives soft, liquid 'bell' calls and gurgling whispers in flocks.
Южноамериканская гарпия
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
Blue Jay
Eastern and central North America from southern Canada to the Gulf Coast. Some populations migrate irregularly.
Южноамериканская гарпия
Central and South America from southern Mexico through Brazil and northern Argentina. Range is shrinking due to deforestation.
Охранный статус
Blue Jay
Южноамериканская гарпия
How to Tell Them Apart
Blue Jay
Bright blue upperparts with black barring on the wings and tail. White face and underparts with a black necklace. Prominent blue crest.
Stout, straight black bill
Южноамериканская гарпия
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
Blue Jay
The blue jay is a bold, intelligent member of the corvid family known for its striking plumage and loud calls. Blue jays are important dispersers of oak trees, as they cache thousands of acorns each autumn. Their complex social behavior includes mimicking the calls of hawks to scare other birds from feeders.
Южноамериканская гарпия
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.