Flock was a wall installation, which contained 500 Origami birds. The project was inspired by flocks of messenger (homing) pigeons and it took 4 weeks to complete. Pigeons have an innate ability to navigate and find their way back to their home base from distances of up to hundreds of miles. This made them an ideal tool for carrying messages over long distances in times when other forms of communication, such as radio or telegraph, were not available or not reliable. During World War I and World War II, homing pigeons were used extensively by the military of many countries, including the United States, Germany, Britain, and France. Pigeons were used to carry messages between military units, to report on enemy positions, and to request reinforcements or supplies. They were also used for espionage, carrying messages from spies behind enemy lines back to their handlers. Pigeons were often taken to the front lines in specially designed baskets, and released to fly back to their home base with a message attached to their leg. The messages were often written in code to prevent interception by enemy forces. Once the message was delivered, the pigeon could be trained to fly back to the front lines with a response. Despite the dangers of flying over enemy territory, pigeons were highly reliable and played a vital role in communication during the war. Many pigeons were awarded medals for their bravery and service, and some became famous for their exploits.