Plumbeous Ibis vs Straw-necked Ibis
Theristicus caerulescens compared with Threskiornis spinicollis
Side-by-Side Comparison
| Attribute | Plumbeous Ibis | Straw-necked Ibis |
|---|---|---|
| Scientific Name | Theristicus caerulescens | Threskiornis spinicollis |
| Order | Pelecaniformes | Pelecaniformes |
| Family | Threskiornithidae | Threskiornithidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 81.6 cm (32.1 in) | 72.9 cm (28.7 in) |
| Weight | 1500.0 g (52.91 oz) | 1340.0 g (47.27 oz) |
| Diet | -- | -- |
| Clutch Size | 2-3 | 2-5 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
Plumbeous Ibis only
None
Straw-necked Ibis only
Conservation Status
Least Concern
Plumbeous Ibis
Least Concern
Straw-necked Ibis
About These Birds
Plumbeous Ibis
73 cm. Pale grey-blue with white underparts; bare blue-grey facial skin; yellow bill. Resident in South American wetlands from Bolivia to Argentina. Feeds on fish, frogs, and invertebrates in shallow marshes and river margins. Near Threatened; affected by wetland drainage and hunting.
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.