Barn Swallow vs King Penguin
Hirundo rustica compared with Aptenodytes patagonicus
Side-by-Side Comparison
| Attribute | Barn Swallow | King Penguin |
|---|---|---|
| Scientific Name | Hirundo rustica | Aptenodytes patagonicus |
| Order | Passeriformes | Sphenisciformes |
| Family | Hirundinidae | Spheniscidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 19.0 cm (7.5 in) | 95.0 cm (37.4 in) |
| Wingspan | 33.0 cm (13.0 in) | 64.0 cm (25.2 in) |
| Weight | 19.0 g (0.67 oz) | 14000.0 g (493.84 oz) |
| Diet | Aerial insects caught in continuous agile flight, including flies, beetles, moths, and aphids. Drinks by … | Primarily lanternfish and squid caught during deep dives. Routinely dives to 100-300 meters, sometimes exceeding … |
| Clutch Size | 2-7 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Barn Swallow
Open farmland, meadows, and areas near water. Nests almost exclusively in human-made structures such as barns, bridges, and eaves.
King Penguin
Breeds on sub-Antarctic islands with flat or gently sloping beaches. Forages in the Southern Ocean.
Song & Call Comparison
Barn Swallow
A rapid, twittering song: a long stream of 'vit-vit-vit' and rolling chirps. Also gives a sharp 'vit' flight call. Song can last many minutes without pause. Musical and liquid.
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.
Geographic Range & Migration
Barn Swallow
Breeds across the Northern Hemisphere in North America, Europe, and Asia. Winters in South America, Africa, and South Asia.
King Penguin
Sub-Antarctic islands including South Georgia, Crozet, Kerguelen, Macquarie, and Falkland Islands.
Conservation Status
Barn Swallow
King Penguin
How to Tell Them Apart
Barn Swallow
Metallic blue-black upperparts, rufous forehead and throat, and pale buff to rufous underparts. Deeply forked tail with elongated outer streamers.
Short, wide, flat black bill adapted for catching insects in flight
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
About These Birds
Barn Swallow
The barn swallow is the most widespread swallow species in the world and has one of the longest migrations of any passerine. Its arrival signals spring across the Northern Hemisphere, inspiring cultural references from ancient Greece to modern poetry. Barn swallows have become almost entirely dependent on human structures for nesting.
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.