Southern Bald Ibis vs Straw-necked Ibis
Geronticus calvus compared with Threskiornis spinicollis
Side-by-Side Comparison
| Attribute | Southern Bald Ibis | Straw-necked Ibis |
|---|---|---|
| Scientific Name | Geronticus calvus | Threskiornis spinicollis |
| Order | Pelecaniformes | Pelecaniformes |
| Family | Threskiornithidae | Threskiornithidae |
| Conservation Status | Near Threatened | Least Concern |
| Length | — | — |
| Wingspan | 77.6 cm (30.6 in) | 72.9 cm (28.7 in) |
| Weight | 1202.0 g (42.40 oz) | 1340.0 g (47.27 oz) |
| Diet | -- | -- |
| Clutch Size | 1-3 | 2-5 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
Southern Bald Ibis only
None
Straw-necked Ibis only
Conservation Status
Near Threatened
Southern Bald Ibis
Least Concern
Straw-necked Ibis
About These Birds
Southern Bald Ibis
79 cm. Glossy black with metallic sheen; bare pink facial skin; red bill and legs. Endemic to South Africa and Lesotho in mountain grasslands and escarpments. Vulnerable; feeds on insects and small vertebrates in short grassland. Colonial breeder on cliff ledges; at risk from pesticides and habitat loss.
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.