PigeonWatch participants observe pigeons and send their data to the Cornell Lab of Ornithology, where scientists compile the information and use it to examine  questions of scientific interest. Citizen scientists participate by counting pigeons and recording courtship behaviors observed in their neighborhood pigeon flocks.
PigeonWatch is an international research project that involves people of all ages and locations in a real scientific endeavor. It combines real "hands-on" science with neighborhood-based education. Although PigeonWatching can be as easy as observing pigeons along a city street,  the data are crucial for scientific research, and PigeonWatchers learn about birds and how science and scientists work.