Japanese White-eye vs Mute Swan
Zosterops japonicus compared with Cygnus olor
Side-by-Side Comparison
| Attribute | Japanese White-eye | Mute Swan |
|---|---|---|
| Scientific Name | Zosterops japonicus | Cygnus olor |
| Order | Passeriformes | Anseriformes |
| Family | Zosteropidae | Anatidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 11.5 cm (4.5 in) | 152.0 cm (59.8 in) |
| Wingspan | 17.0 cm (6.7 in) | 235.0 cm (92.5 in) |
| Weight | 11.0 g (0.39 oz) | 11000.0 g (388.01 oz) |
| Diet | Insects, nectar, and fruit. Active gleaner that flits through foliage and visits flowers. Important pollinator … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| Clutch Size | 2-6 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Japanese White-eye
Broadleaf evergreen forests, gardens, parks, and suburban areas. Highly adaptable and common in East Asian gardens.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Japanese White-eye
Sweet, high-pitched 'tsee-tsee-tsee' whistle and soft melodic warbling. Flocks produce a continuous tinkling chorus. Alarm is a sharper 'tset'. Song is gentle and rhythmic.
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound in flight.
Geographic Range & Migration
Japanese White-eye
East Asia including Japan, China, Korea, Taiwan, Vietnam, and the Philippines. Introduced to Hawaii and other Pacific islands.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Conservation Status
Japanese White-eye
Mute Swan
How to Tell Them Apart
Japanese White-eye
Olive-green upperparts with a bright white eye-ring. Yellow throat and undertail coverts. Greyish-white belly.
Thin, pointed, slightly decurved dark bill
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
About These Birds
Japanese White-eye
The Japanese white-eye is a familiar garden bird across East Asia, beloved in Japan where it is called mejiro. These sociable birds form flocks outside the breeding season and are important pollinators of plum and cherry blossoms. Unfortunately, introduced populations in Hawaii have become invasive, competing with native honeycreepers.
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.