Blue Jay vs Emu
Cyanocitta cristata 比較対象 Dromaius novaehollandiae
Side-by-Side Comparison
| 属性 | Blue Jay | Emu |
|---|---|---|
| 学名 | Cyanocitta cristata | Dromaius novaehollandiae |
| 目 | Passeriformes | Casuariiformes |
| 科 | Corvidae | Dromaiidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 28.0 cm (11.0 in) | 175.0 cm (68.9 in) |
| 翼開長 | 42.0 cm (16.5 in) | 20.0 cm (7.9 in) |
| 体重 | 87.0 g (3.07 oz) | 45000.0 g (1587.33 oz) |
| 食性 | Omnivorous — nuts (especially acorns), seeds, berries, insects, and occasionally eggs or nestlings of other … | Plants, seeds, fruits, flowers, and insects. Swallows large stones and charcoal to grind food in … |
| 一腹卵数 | 2-7 | 5-24 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Blue Jay
Deciduous and mixed forests, parks, and suburban areas. Highly adaptable to human-modified landscapes.
Emu
Open grasslands, savanna woodlands, scrublands, and semi-arid plains across Australia. Avoids dense forest and true desert.
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.
Emu
Deep, resonant booming grunt 'e-moo', often repeated 3 times. Females give a deep drumming call produced by an inflatable throat pouch. Generally low-pitched and far-carrying.
Geographic Range & Migration
Blue Jay
Eastern and central North America from southern Canada to the Gulf Coast. Some populations migrate irregularly.
Emu
Throughout mainland Australia. Absent from Tasmania, where the Tasmanian emu was driven to extinction by 1850.
保全状況
Blue Jay
Emu
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
Emu
Shaggy grey-brown plumage with double-shafted feathers giving a loose, hair-like appearance. Bare blue skin on the face and neck.
Broad, flat, dark grey bill