| Theristicus | |
|---|---|
| |
| Black-faced ibis. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Pelecaniformes |
| Family: | Threskiornithidae |
| Subfamily: | Threskiornithinae |
| Genus: | Theristicus Wagler, 1832 |
| Type species | |
| Tantalus melanopis Gmelin, 1789
| |
Theristicus is a genus of birds in the family Threskiornithidae. They are found in open, grassy habitats in South America. All have a long, decurved dark bill, relatively short reddish legs that do not extend beyond the tail in flight (unlike e.g. Eudocimus and Plegadis), and at least the back is grey.