A songbird is a bird that is known for its ability to sing and produce melodious songs. These birds are typically small, with many species being around 10 inches in length or less. They belong to the family Passeridae which includes some of the most common and well-known birds such as sparrows, warblers, thrushes, and finches. Songbirds are known for their complex songs that can vary greatly between different species and even within a single species depending on age or location. These birds have been admired and enjoyed by humans for centuries due to their beautiful melodies and many songbirds are kept as pets or trained to sing in concerts.