King Penguin vs Mallard
Aptenodytes patagonicus compared with Anas platyrhynchos
Side-by-Side Comparison
| Attribute | King Penguin | Mallard |
|---|---|---|
| Scientific Name | Aptenodytes patagonicus | Anas platyrhynchos |
| Order | Sphenisciformes | Anseriformes |
| Family | Spheniscidae | Anatidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 95.0 cm (37.4 in) | 58.0 cm (22.8 in) |
| Wingspan | 64.0 cm (25.2 in) | 90.0 cm (35.4 in) |
| Weight | 14000.0 g (493.84 oz) | 1100.0 g (38.80 oz) |
| Diet | Primarily lanternfish and squid caught during deep dives. Routinely dives to 100-300 meters, sometimes exceeding … | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| Clutch Size | 1 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
King Penguin
Breeds on sub-Antarctic islands with flat or gently sloping beaches. Forages in the Southern Ocean.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
King Penguin
Uses individually unique complex calls for mate and chick recognition in noisy colonies. Produces a loud, musical trumpeting. Chick whistles are distinctive per family unit.
Mallard
Female gives the classic 'quack-quack-quack', descending in pitch. Male utters soft nasal 'raeb-raeb'. Both give a high 'gag-gag-gag' when alarmed or taking flight.
Geographic Range & Migration
King Penguin
Sub-Antarctic islands including South Georgia, Crozet, Kerguelen, Macquarie, and Falkland Islands.
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
Conservation Status
King Penguin
Mallard
How to Tell Them Apart
King Penguin
Dark blue-grey back with white belly. Vivid orange-gold auricular patches on the sides of the head and upper breast. Silvery-grey upperparts.
Long, slender, slightly decurved bill with orange mandible plates
Mallard
Breeding males have an iridescent green head, white neck ring, chestnut breast, and grey body. Females are mottled brown. Both sexes show a blue speculum bordered by white.
Broad, flat bill — yellow-green in males, orange-brown in females
About These Birds
King Penguin
The king penguin is the second-largest penguin species, known for its striking orange-gold head markings. Unlike most penguins, king penguins do not build nests — they incubate their single egg on their feet. Their 14-16 month breeding cycle is the longest of any penguin species.
Mallard
The mallard is the ancestor of most domestic duck breeds and the most abundant and widespread dabbling duck in the world. Males perform elaborate courtship displays including head-bobbing and whistle-grunt calls. Mallards are highly adaptable, thriving in both wilderness and urban environments.