Giant Ibis vs Black-headed Ibis
Thaumatibis gigantea compared with Threskiornis melanocephalus
Side-by-Side Comparison
| Attribute | Giant Ibis | Black-headed Ibis |
|---|---|---|
| Scientific Name | Thaumatibis gigantea | Threskiornis melanocephalus |
| Order | Pelecaniformes | Pelecaniformes |
| Family | Threskiornithidae | Threskiornithidae |
| Conservation Status | Critically Endangered | Least Concern |
| Length | — | — |
| Wingspan | 106.6 cm (42.0 in) | 70.0 cm (27.6 in) |
| Weight | 3515.0 g (123.99 oz) | 1303.0 g (45.96 oz) |
| Diet | -- | -- |
| Clutch Size | 2-3 | 2-4 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Critically Endangered
Giant Ibis
Least Concern
Black-headed 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.
Black-headed Ibis
65–76 cm. White with bare black head; black wingtips and neck feathers. Resident across South and Southeast Asia in wetlands, rice paddies, and grasslands. Near Threatened; declining due to habitat loss and hunting. Feeds by probing in shallow water for fish and invertebrates; colonial nester.