Feral parrots of Telegraph Hill

A year-round population of non-native feral parrots, primarily mitred parakeets, has established on Telegraph Hill and the surrounding North Beach/Coit Tower area, where they roost and forage in urban vegetation. The flock is an ecological anomaly in a temperate urban environment and has been the subject of scientific and popular interest, including the book and documentary The Wild Parrots of Telegraph Hill. The exact origin and initial release/establishment of the flock are debated among researchers and residents.