Sifakas live in small family groups of three to ten animals. It is believed that only one female from each group breeds, while males may move from group to group.
Sifakas are herbivores, eating leaves, flowers and fruits. When not searching for food they spend a good part of the day sun bathing, stretched on the branches. Sifakas live in larger groups than the other indrids (up to 13 animals). They have a firm territory, which they mark with scent glands. Edges of different sifaka territories can overlap. Even though they defend their territory from invasion by others of their species, they may peacefully co-exist with other lemur species such as Red-bellied Lemur and the Common Brown Lemur. Successful invasions are known to result in death of male members, group takeover and infanticide.
- Family Indriidae: woolly lemurs and allies
- Genus Indri
- Genus Avahi
- Genus Propithecus
- P. diadema group
- P. verreauxi group
- ↑ (2007) "Craniodental characters in the taxonomy of Propithecus" (PDF). International Journal of Primatology 28 (6): 1363–1383. doi:10.1007/s10764-007-9226-5.