Rarotonga Fruit-dove vs Rock Pigeon
Ptilinopus rarotongensis 对比 Columba livia
Side-by-Side Comparison
| 属性 | Rarotonga Fruit-dove | Rock Pigeon |
|---|---|---|
| 学名 | Ptilinopus rarotongensis | Columba livia |
| 目 | Columbiformes | Columbiformes |
| 科 | Columbidae | Columbidae |
| 保护状况 | Near Threatened | Least Concern |
| 体长 | — | 33.0 cm (13.0 in) |
| 翼展 | 24.9 cm (9.8 in) | 68.0 cm (26.8 in) |
| 体重 | 97.6 g (3.44 oz) | 300.0 g (10.58 oz) |
| 食性 | -- | Seeds, grain, fruit, and human food scraps. Primarily a ground feeder. Feral birds are heavily … |
| 产卵数 | -- | 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
Rarotonga Fruit-dove
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
Rarotonga Fruit-dove
Rock Pigeon
Native to Europe, North Africa, and South Asia. Feral populations on every continent except Antarctica.
保护状况
Rarotonga Fruit-dove
Rock Pigeon
How to Tell Them Apart
Rarotonga Fruit-dove
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
Rarotonga Fruit-dove
Rarotonga Fruit-dove (Ptilinopus rarotongensis), 20 cm. Green with a white head and underparts; endemic to Rarotonga and Atiu in the Cook Islands. Inhabits montane cloud forest and forest edges. Frugivore. Vulnerable; threatened by rats, habitat loss and introduced species.
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.