Polynesian Imperial-pigeon vs Rock Pigeon
Ducula aurorae เปรียบเทียบกับ Columba livia
Side-by-Side Comparison
| คุณสมบัติ | Polynesian Imperial-pigeon | Rock Pigeon |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Ducula aurorae | Columba livia |
| อันดับ | Columbiformes | Columbiformes |
| วงศ์ตระกูล | Columbidae | Columbidae |
| สถานะการอนุรักษ์ | Endangered | Least Concern |
| ความยาว | — | 33.0 cm (13.0 in) |
| กว้างปีก | 46.8 cm (18.4 in) | 68.0 cm (26.8 in) |
| น้ำหนัก | 507.2 g (17.89 oz) | 300.0 g (10.58 oz) |
| อาหาร | -- | Seeds, grain, fruit, and human food scraps. Primarily a ground feeder. Feral birds are heavily … |
| จำนวนไข่ | -- | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Rock Pigeon
Originally cliff-nesting in Mediterranean regions. Now the quintessential urban bird, inhabiting cities worldwide on every continent.
Song & Call Comparison
Polynesian Imperial-pigeon
Rock Pigeon
Soft, rhythmic cooing 'roo-c'too-coo' repeated multiple times, with emphasis on second syllable. Male courtship coo is deeper and more persistent. Wing-clapping on takeoff is loud.
Geographic Range & Migration
Polynesian Imperial-pigeon
Rock Pigeon
Native to Europe, North Africa, and South Asia. Feral populations on every continent except Antarctica.
สถานะการอนุรักษ์
Polynesian Imperial-pigeon
Rock Pigeon
How to Tell Them Apart
Polynesian Imperial-pigeon
Rock Pigeon
Wild-type has a blue-grey body with iridescent green and purple neck feathers, two black wing bars, and a white rump. Feral populations show enormous color variation.
Slender dark bill with a white fleshy cere at the base
About These Birds
Polynesian Imperial-pigeon
Polynesian Imperial-pigeon (Ducula aurorae), 43 cm. Pale grey-white head and underparts; dark metallic green upperparts. Endemic to the Society Islands (Tahiti, Maupiti) of French Polynesia. Inhabits montane and lowland forest. Endangered; heavy hunting and introduced predators have caused steep decline.
Rock Pigeon
The rock pigeon is the ancestor of all domestic pigeon breeds and one of the most abundant birds in cities worldwide. Pigeons have served humans as messengers, food, and subjects for scientific research — their homing ability and vision have been studied extensively. Darwin's study of pigeon breeding contributed to his theory of evolution.