The Passenger Pigeon is famous for the enormity of its historical population in North America (estimated at 3 to 5 billion) and for its rapid extinction in the face of mass slaughter by humans. Yet it remains a mystery why the species wasn't able to survive in at least a few small, isolated populations. A female and male Passenger pigeon (Ectopistes migratorius) mount from the collections of the Royal Ontario Museum  [Credit:...

[[ This is a content summary only. Visit my website for full links, other content, and more! ]]