Common Kingfisher vs Great Blue Heron
Alcedo atthis compared with Ardea herodias
Side-by-Side Comparison
| Attribute | Common Kingfisher | Great Blue Heron |
|---|---|---|
| Scientific Name | Alcedo atthis | Ardea herodias |
| Order | Coraciiformes | Pelecaniformes |
| Family | Alcedinidae | Ardeidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 17.0 cm (6.7 in) | 117.0 cm (46.1 in) |
| Wingspan | 25.0 cm (9.8 in) | 183.0 cm (72.0 in) |
| Weight | 36.0 g (1.27 oz) | 2400.0 g (84.66 oz) |
| Diet | Small fish, aquatic insects, and crustaceans. Hunts from a low perch over water, diving headfirst … | Primarily fish, also frogs, snakes, small mammals, insects, and other birds. Hunts by standing motionless … |
| Clutch Size | 3-10 | 2-7 |
| 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.
Great Blue Heron
Wetlands of all types including marshes, swamps, riverbanks, lake edges, and coastal shores. Also hunts in fields and meadows.
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 …
Great Blue Heron
Deep, harsh, croaking 'frahnk-frahnk' call in flight. Also gives low guttural grunts at the nest. Alarmed birds give repeated croaks. Mostly silent for such a large wader.
Geographic Range & Migration
Common Kingfisher
Widespread across Europe, Asia, and North Africa. Northern populations migrate south in winter.
Great Blue Heron
North and Central America from Alaska and southern Canada to the Caribbean and Galapagos Islands.
Conservation Status
Common Kingfisher
Great Blue Heron
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
Great Blue Heron
Blue-grey body with a white head bearing a broad black stripe extending to a long black plume. Rufous-brown thighs. In flight, the neck is folded into an S-shape.
Long, dagger-like yellowish 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.
Great Blue Heron
The great blue heron is the largest heron in North America, standing up to 1.4 meters tall. These patient hunters can stand motionless for extended periods before striking at prey with remarkable speed. They nest in large colonies called heronries, often returning to the same site year after year.