Keel-billed Toucan vs Rock Pigeon
Ramphastos sulfuratus 比較対象 Columba livia
Side-by-Side Comparison
| 属性 | Keel-billed Toucan | Rock Pigeon |
|---|---|---|
| 学名 | Ramphastos sulfuratus | Columba livia |
| 目 | Piciformes | Columbiformes |
| 科 | Ramphastidae | Columbidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 50.0 cm (19.7 in) | 33.0 cm (13.0 in) |
| 翼開長 | 56.0 cm (22.0 in) | 68.0 cm (26.8 in) |
| 体重 | 400.0 g (14.11 oz) | 300.0 g (10.58 oz) |
| 食性 | Primarily fruit, supplemented with insects, lizards, eggs, and nestlings. Uses its long bill to reach … | Seeds, grain, fruit, and human food scraps. Primarily a ground feeder. Feral birds are heavily … |
| 一腹卵数 | 1-4 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Keel-billed Toucan
Tropical and subtropical lowland rainforests and forest edges from sea level to about 1,900 meters.
Rock Pigeon
Originally cliff-nesting in Mediterranean regions. Now the quintessential urban bird, inhabiting cities worldwide on every continent.
Song & Call Comparison
Keel-billed Toucan
Produces a repeated frog-like croaking 'prrrek-prrrek' or 'terrio-terrio'. Not melodic; the call resembles a mechanical rattle or frog. Also gives bill-clattering.
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
Keel-billed Toucan
Southern Mexico through Central America to northern Colombia and northwestern Venezuela.
Rock Pigeon
Native to Europe, North Africa, and South Asia. Feral populations on every continent except Antarctica.
保全状況
Keel-billed Toucan
Rock Pigeon
How to Tell Them Apart
Keel-billed Toucan
Black body with a bright yellow throat and chest. Red undertail coverts. The enormous bill is green with orange sides, a blue patch, and a red tip.
Enormous, lightweight, multicolored bill up to 15 cm long — green, orange, blue, and red
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
Keel-billed Toucan
The keel-billed toucan is the national bird of Belize and one of the most recognizable birds in the Neotropics. Its oversized bill, which can be a third of its body length, is actually very light due to its hollow honeycomb structure. Toucans roost communally, with up to six adults squeezing into a single tree cavity.
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.