Common Kingfisher vs Eurasian Wren
Alcedo atthis compared with Troglodytes troglodytes
Side-by-Side Comparison
| Attribute | Common Kingfisher | Eurasian Wren |
|---|---|---|
| Scientific Name | Alcedo atthis | Troglodytes troglodytes |
| Order | Coraciiformes | Passeriformes |
| Family | Alcedinidae | Troglodytidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 17.0 cm (6.7 in) | 9.5 cm (3.7 in) |
| Wingspan | 25.0 cm (9.8 in) | 15.0 cm (5.9 in) |
| Weight | 36.0 g (1.27 oz) | 9.0 g (0.32 oz) |
| Diet | Small fish, aquatic insects, and crustaceans. Hunts from a low perch over water, diving headfirst … | Insects and spiders, gleaned from dense vegetation, rock crevices, and bark. Active and restless forager. |
| Clutch Size | 3-10 | 3-9 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Common Kingfisher
Clear, slow-flowing rivers, streams, lakes, and ponds with suitable perching and nesting banks. Requires clean water with good fish populations.
Eurasian Wren
Dense undergrowth in woodlands, gardens, hedgerows, and rocky areas. Prefers tangled vegetation close to the ground.
Song & Call Comparison
Common Kingfisher
A sharp, penetrating 'chee' whistle given in flight, often the first indication of its presence. Short, shrill single note as it darts low over rivers. Contact call is a rippling …
Eurasian Wren
Extraordinarily loud for its tiny size: a rapid, powerful stream of trills, buzzes, and churring phrases. One of Europe's loudest songs by volume relative to body weight.
Geographic Range & Migration
Common Kingfisher
Widespread across Europe, Asia, and North Africa. Northern populations migrate south in winter.
Eurasian Wren
Eurasia from Iceland and western Europe to Japan. The only wren species found outside the Americas.
Conservation Status
Common Kingfisher
Eurasian Wren
How to Tell Them Apart
Common Kingfisher
Brilliant electric blue upperparts and orange underparts. Blue-green crown with darker barring. White throat patch and cheek spots. A flash of blue in flight.
Long, straight, dagger-like dark bill — orange base on the lower mandible in females
Eurasian Wren
Warm rufous-brown upperparts with fine dark barring. Pale buffy underparts with barred flanks. Short, often cocked tail.
Thin, slightly curved, dark brown bill
About These Birds
Common Kingfisher
The common kingfisher is a dazzling jewel of waterways, its iridescent blue plumage caused by light refraction in the feather structure rather than pigment. These birds inspired the design of the Shinkansen bullet train in Japan — the shape of their bill was copied to reduce sonic booms when trains exit tunnels.
Eurasian Wren
The Eurasian wren is one of the smallest birds in Europe but possesses an astonishingly loud song for its size. Males build multiple dome-shaped nests, from which the female selects one to line and use. In British folklore, the wren is known as the king of birds for outwitting the eagle in a flying contest.