How was the feral pigeon introduced?

The feral pigeon is believed to be descended from domestic pigeons that were originally brought to various regions by humans for food, sport, and communication purposes. Over time, some of these domestic pigeons escaped or were released, and they eventually adapted and thrived in the wild. The feral pigeon's ability to adapt to different environments, along with its strong flying capabilities, allowed it to spread and become established in various parts of the world. Human activities such as trade and transportation also contributed to the spread of feral pigeons, as they were often unintentionally transported to new areas.