Sonograms are powerful tools for studying bird vocalization, providing insights into the vocalization of different species of birds and how they use their songs to communicate, attract mates and defend territory. They can also be used to study the effects of environmental factors on birds and to understand more about the vocal development of individual birds. Sonograms are widely used by ornithologists, bioacousticians, and conservationists to provide a deeper understanding of avian behavior and ecology. (sonogram from xeno-canto.org)