Red-knobbed Imperial-pigeon vs Rock Pigeon
Ducula rubricera compared with Columba livia
Side-by-Side Comparison
| Attribute | Red-knobbed Imperial-pigeon | Rock Pigeon |
|---|---|---|
| Scientific Name | Ducula rubricera | Columba livia |
| Order | Columbiformes | Columbiformes |
| Family | Columbidae | Columbidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | 33.0 cm (13.0 in) |
| Wingspan | 47.8 cm (18.8 in) | 68.0 cm (26.8 in) |
| Weight | 662.5 g (23.37 oz) | 300.0 g (10.58 oz) |
| Diet | -- | Seeds, grain, fruit, and human food scraps. Primarily a ground feeder. Feral birds are heavily … |
| Clutch Size | 1 | 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
Red-knobbed 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
Red-knobbed Imperial-pigeon
Rock Pigeon
Native to Europe, North Africa, and South Asia. Feral populations on every continent except Antarctica.
Conservation Status
Red-knobbed Imperial-pigeon
Rock Pigeon
How to Tell Them Apart
Red-knobbed 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
Red-knobbed Imperial-pigeon
Red-knobbed Imperial-pigeon (Ducula rubricera), 40 cm. Pale grey head with a diagnostic red knob at the bill base; dark green upperparts. Found in the Bismarck Archipelago and Solomon Islands. Inhabits lowland primary forest. Frugivore. Least Concern; hunting pressure on larger islands.
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.