Eurasian Wren vs Southern Cassowary
Troglodytes troglodytes compared with Casuarius casuarius
Side-by-Side Comparison
| Attribute | Eurasian Wren | Southern Cassowary |
|---|---|---|
| Scientific Name | Troglodytes troglodytes | Casuarius casuarius |
| Order | Passeriformes | Casuariiformes |
| Family | Troglodytidae | Casuariidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 9.5 cm (3.7 in) | 155.0 cm (61.0 in) |
| Wingspan | 15.0 cm (5.9 in) | 60.2 cm (23.7 in) |
| Weight | 9.0 g (0.32 oz) | 58000.0 g (2045.89 oz) |
| Diet | Insects and spiders, gleaned from dense vegetation, rock crevices, and bark. Active and restless forager. | Primarily fallen fruit from the rainforest floor, also fungi, invertebrates, and small vertebrates. A critical … |
| Clutch Size | 3-9 | 3-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Eurasian Wren
Dense undergrowth in woodlands, gardens, hedgerows, and rocky areas. Prefers tangled vegetation close to the ground.
Southern Cassowary
Tropical rainforests, mangroves, and adjacent habitat in New Guinea and northeastern Australia.
Song & Call Comparison
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.
Southern Cassowary
Produces very deep, booming rumbles and low-frequency calls below 20 Hz (infrasound), felt more than heard. Also gives loud bellowing grunts audible up to 1 km away.
Geographic Range & Migration
Eurasian Wren
Eurasia from Iceland and western Europe to Japan. The only wren species found outside the Americas.
Southern Cassowary
New Guinea, nearby islands, and northeastern Queensland, Australia.
Conservation Status
Eurasian Wren
Southern Cassowary
How to Tell Them Apart
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
Southern Cassowary
Glossy black hair-like plumage. Brilliant blue and red bare skin on the head and neck. A large bony casque crowns the head. Vestigial wings with no flight feathers.
Long, laterally compressed, dark grey bill
About These Birds
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.
Southern Cassowary
The southern cassowary is often called the most dangerous bird in the world due to its powerful legs and dagger-like inner claw that can reach 12 cm in length. Despite this reputation, cassowaries are vital rainforest keystone species, dispersing seeds of plants that no other animal can. The purpose of their distinctive casque remains debated.