Sericornis is a genus of small birds commonly known as thornbills. These birds are primarily found in Australia and New Guinea, inhabiting dense forests and scrublands. They are characterized by their slender bodies, long tails, and distinctive calls, which they use to communicate with each other. Thornbills are known for their foraging behavior, often searching for insects and other small invertebrates among foliage. There are several species within the Sericornis genus, each adapted to specific habitats. Their presence is an important indicator of the health of their ecosystems, as they play a role in controlling insect populations.