Common Ostrich vs Downy Woodpecker
Struthio camelus 比較対象 Picoides pubescens
Side-by-Side Comparison
| 属性 | Common Ostrich | Downy Woodpecker |
|---|---|---|
| 学名 | Struthio camelus | Picoides pubescens |
| 目 | Struthioniformes | Piciformes |
| 科 | Struthionidae | Picidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 210.0 cm (82.7 in) | 16.0 cm (6.3 in) |
| 翼開長 | 200.0 cm (78.7 in) | 28.0 cm (11.0 in) |
| 体重 | 100000.0 g (3527.40 oz) | 27.0 g (0.95 oz) |
| 食性 | Omnivorous — plants, seeds, roots, flowers, insects, and small vertebrates. Swallows pebbles to aid digestion … | Insects and larvae extracted from bark, supplemented with seeds, berries, and suet at feeders. Often … |
| 一腹卵数 | 2-11 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Common Ostrich
Open arid and semi-arid habitats including savannas, Sahel, and dry woodlands across Africa.
Downy Woodpecker
Deciduous and mixed forests, orchards, parks, and suburban areas. The most common woodpecker at feeders in North America.
Song & Call Comparison
Common Ostrich
Male produces a surprisingly deep, resonant booming roar — remarkably lion-like. Also gives whistling and hissing sounds. Females and chicks emit softer grunts and squeaks.
Downy Woodpecker
A sharp 'pik' or 'peek' contact call. Drums on resonant branches with a rapid, light tattoo — softer than larger woodpeckers. Also gives a high descending whinny 'keeer-keeer'.
Geographic Range & Migration
Common Ostrich
Sub-Saharan Africa. Formerly also found in the Middle East and parts of Asia. Farmed worldwide.
Downy Woodpecker
North America from Alaska and Canada south through the United States, excluding the arid Southwest.
保全状況
Common Ostrich
Downy Woodpecker
How to Tell Them Apart
Common Ostrich
Males have black body plumage with white wing and tail feathers. Females and immatures are grey-brown. Bare skin on the neck and thighs varies from pink to blue.
Broad, flat bill adapted for an omnivorous diet
Downy Woodpecker
Black and white plumage with a broad white stripe down the back. Black wings with white spots. Males have a small red patch on the nape.
Short, chisel-shaped, dark bill — noticeably shorter than the similar hairy woodpecker
About These Birds
Common Ostrich
ダチョウ（Struthio camelus）— 世界最大の鳥でアフリカのサバンナに生息する。飛べないが時速70kmで走ることができ、世界最大の卵を産む。
Downy Woodpecker
The downy woodpecker is the smallest and most widespread woodpecker in North America. Its small size allows it to forage on thin branches and weed stems that larger woodpeckers cannot access. Downies often join mixed-species flocks in winter, benefiting from the extra vigilance of multiple species watching for predators.