Buff-necked Ibis vs Straw-necked Ibis
Theristicus caudatus compared with Threskiornis spinicollis
Side-by-Side Comparison
| Attribute | Buff-necked Ibis | Straw-necked Ibis |
|---|---|---|
| Scientific Name | Theristicus caudatus | Threskiornis spinicollis |
| Order | Pelecaniformes | Pelecaniformes |
| Family | Threskiornithidae | Threskiornithidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 78.6 cm (30.9 in) | 72.9 cm (28.7 in) |
| Weight | 1708.0 g (60.25 oz) | 1340.0 g (47.27 oz) |
| Diet | -- | -- |
| Clutch Size | 1-3 | 2-5 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
Buff-necked Ibis only
None
Straw-necked Ibis only
Conservation Status
Least Concern
Buff-necked Ibis
Least Concern
Straw-necked Ibis
About These Birds
Buff-necked Ibis
71–76 cm. White head and neck with rusty tone; black back; buff breast; bare yellow facial skin. Widespread in South America from Colombia and Venezuela south to Argentina in open savannas and grasslands. Feeds on invertebrates, lizards, and frogs. Common; often in pairs or small groups.
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.