Blue Jay vs Amami Jay
Cyanocitta cristata เปรียบเทียบกับ Garrulus lidthi
Side-by-Side Comparison
| คุณสมบัติ | Blue Jay | Amami Jay |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Cyanocitta cristata | Garrulus lidthi |
| อันดับ | Passeriformes | Passeriformes |
| วงศ์ตระกูล | Corvidae | Corvidae |
| สถานะการอนุรักษ์ | Least Concern | Vulnerable |
| ความยาว | 28.0 cm (11.0 in) | — |
| กว้างปีก | 42.0 cm (16.5 in) | 34.8 cm (13.7 in) |
| น้ำหนัก | 87.0 g (3.07 oz) | 125.0 g (4.41 oz) |
| อาหาร | Omnivorous — nuts (especially acorns), seeds, berries, insects, and occasionally eggs or nestlings of other … | -- |
| จำนวนไข่ | 2-7 | 3-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Blue Jay
Deciduous and mixed forests, parks, and suburban areas. Highly adaptable to human-modified landscapes.
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.
Amami Jay
Geographic Range & Migration
Blue Jay
Eastern and central North America from southern Canada to the Gulf Coast. Some populations migrate irregularly.
Amami Jay
สถานะการอนุรักษ์
Blue Jay
Amami Jay
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
Amami Jay
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.
Amami Jay
The Amami Jay is a vulnerable corvid weighing 125 g with a broad 34.8 cm wingspan, endemic to the Amami Islands of southern Japan. It has striking blue and chestnut plumage and inhabits subtropical broadleaf forests where it caches food.