Little birds are a common sight in many parts of the world. They are often referred to as 'tits' (4 letters) and 'nestlings' (9 letters). Tits are small, often brightly colored birds that live in trees and shrubs. Nestlings are young birds that are still in the nest and are dependent on their parents for food and protection. Both tits and nestlings are important members of the ecosystem, providing food for other animals and helping to keep insect populations in check.