September 1, 1914 saw the last example of what species, which existed in enormous migratory flocks, sometimes containing more than two billion birds that could stretch one mile wide and 300 miles long, when Martha died at the Cincinnati Zoo?
Columba canadensis Passenger Pigeon Martha the Passenger Pigeon North american passer pigeon E. migratorius Ectopistes migratorius Passenger pigeon E migratorius Columba migratoria Ectopistes Passenger pigeons Passenger Pigeons Ectopistes migratoria Wild Pigeon
north american passer pigeon ectopistes migratoria wild pigeon martha passenger pigeon ectopistes ectopistes migratorius passenger pigeon columba migratoria e migratorius passenger pigeons columba canadensis
passenger pigeon
WikipediaEntity
Passenger Pigeon