Giant Ibis vs Straw-necked Ibis
Thaumatibis gigantea compared with Threskiornis spinicollis
Side-by-Side Comparison
| Attribute | Giant Ibis | Straw-necked Ibis |
|---|---|---|
| Scientific Name | Thaumatibis gigantea | Threskiornis spinicollis |
| Order | Pelecaniformes | Pelecaniformes |
| Family | Threskiornithidae | Threskiornithidae |
| Conservation Status | Critically Endangered | Least Concern |
| Length | — | — |
| Wingspan | 106.6 cm (42.0 in) | 72.9 cm (28.7 in) |
| Weight | 3515.0 g (123.99 oz) | 1340.0 g (47.27 oz) |
| Diet | -- | -- |
| Clutch Size | 2-3 | 2-5 |
| Population Trend | — | — |
Habitat Comparison
Giant Ibis only
None
Straw-necked Ibis only
Conservation Status
Critically Endangered
Giant Ibis
Least Concern
Straw-necked Ibis
About These Birds
Giant Ibis
102–106 cm. Massive; dark brown with naked grey head; heavy downcurved grey bill; red legs. Critically Endangered; world's largest ibis with fewer than 250 adults. Breeds in Cambodian lowland forests and adjacent Laos. Threatened by logging, hunting, and human disturbance near nests.
Straw-necked Ibis
59–76 cm. White with black neck bristles; bare dark head; yellowish bill. Endemic to Australia in grasslands, pastures, and inland wetlands. Nomadic; follows rainfall across the continent. Feeds on insects and invertebrates in dry grassland. Often seen in mixed flocks with Australian Ibis.