Extinct Animal of the Week II

The Passenger Pigeon

"The Passenger Pigeon or Wild Pigeon (Ectopistes migratorius) is an extinct bird, which existed in North America. It lived in enormous migratory flocks – sometimes containing more than two billion birds – that could stretch one mile (1.6 km) wide and 300 miles (500 km) long across the sky, sometimes taking several hours to pass."