Brown thrasher, wood thrush, mockingbird and Australian superb lyrebird are just a few of the 4,000 species of songbirds. Most birds produce short, simple calls, but songbirds also have a repertoire of complex vocal patterns that help them attract mates, defend territory, and strengthen their social bond. So how do these birds learn songs in the first place? How do they know to mimic the songs of their own species? Are they born knowing how to sing?