Passenger Pigeons flew in huge flocks of billions of birds. They darkened the sky with their numbers and took days to pass by. They were massively over hunted and also lost habitat during the eighteen hundreds. The Passenger Pigeon became extinct in 1914. The Fold The Flock project commemorates the pigeon's extinction by making origami pigeons. Jen Finkle and I did a program at the Round Lake Library explaining their demise and then, with program participants, folded a flock. The pigeons are flying in the Children's Room, darkening the window. Go to foldtheflock.org for more information.