Theristicus
| 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.