There are four species of small to medium-sized birds in this family. They are found in India and Southeast Asia.

Ioras are colorful birds with bright yellow or green feathers. Most are 5–7 inches (13.0–17.8 cm) long. Males are usually brighter in color than females, especially during the breeding season. Two species, the Common Iora and the Green Iora, have black wings with white wing bars.

Ioras live in forests, woodlands, gardens, and scrub habitats. They eat insects, spiders, berries, and other small fruits. They spend most of their time searching for food high in the tree canopy.

Females usually lay 2–3 eggs in a small, cup-shaped nest built in a tree or shrub. Both parents take turns incubating the eggs and feeding and caring for the chicks after they hatch.