African Penguin vs Common Kestrel
Spheniscus demersus compared with Falco tinnunculus
Side-by-Side Comparison
| Attribute | African Penguin | Common Kestrel |
|---|---|---|
| Scientific Name | Spheniscus demersus | Falco tinnunculus |
| Order | Sphenisciformes | Falconiformes |
| Family | Spheniscidae | Falconidae |
| Conservation Status | Endangered | Least Concern |
| Length | 60.0 cm (23.6 in) | 34.0 cm (13.4 in) |
| Wingspan | 42.0 cm (16.5 in) | 74.0 cm (29.1 in) |
| Weight | 3100.0 g (109.35 oz) | 190.0 g (6.70 oz) |
| Diet | Small schooling fish, especially sardines and anchovies. Forages within 40 km of the colony, diving … | Primarily voles and mice, also lizards, large insects, and small birds. Hunts by hovering at … |
| Clutch Size | 2 | 1-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
African Penguin
Rocky coastlines and offshore islands of southern Africa. Nests in burrows, under boulders, or in surface scrapes.
Common Kestrel
Open country including farmland, grasslands, moorland, and urban areas. Common along motorways and in cities across Europe.
Song & Call Comparison
African Penguin
A loud, donkey-like braying 'waaah-waaah' — hence its nickname 'jackass penguin'. Also gives softer grunts and contact calls at the colony. Highly vocal on breeding beaches.
Common Kestrel
A shrill, repeated 'kee-kee-kee-kee' or 'kik-ik-ik', especially near nest. Alarm call is a nasal chattering. Generally less vocal than larger falcons. Calls ring clearly in open country.
Geographic Range & Migration
African Penguin
Coastal southwestern Africa from Namibia to Port Elizabeth, South Africa. The only penguin species breeding in Africa.
Common Kestrel
Europe, Asia, and Africa. One of the most common and widespread raptors in the Old World.
Conservation Status
African Penguin
Common Kestrel
How to Tell Them Apart
African Penguin
Black upperparts and white underparts with a distinctive black horseshoe-shaped band across the breast. Pink patches of bare skin above the eyes help with thermoregulation.
Sturdy, pointed, black bill with a grey band near the tip
Common Kestrel
Males have a blue-grey head and tail with a rufous back spotted with black. Females are rufous-brown with heavy barring. Both have a dark moustachial stripe.
Short, hooked grey bill with a yellow cere
About These Birds
African Penguin
The African penguin is the only penguin species native to the African continent, also called the jackass penguin for its donkey-like braying call. Their population has plummeted over 95% since pre-industrial times due to egg collection, oil spills, and competition with commercial fisheries for sardine and anchovy stocks.
Common Kestrel
The common kestrel is Europe's most abundant falcon, famous for its ability to hover motionless in the wind while scanning for prey. Research has shown kestrels can see ultraviolet light, allowing them to detect vole urine trails that reflect UV. The species has adapted remarkably well to urban environments.