How America's Most Plentiful Bird Disappeared

Shannon Heffernan
People had trouble trying to wrap their minds around how the Passenger Pigeon could disappear,. They came up with all kinds of theories to explain why it wasn’t human’s fault, like that the birds moved to South America and changed their appearance. There is a similar reaction now. There is a common human reaction that when confronted with an inconvenient truth to deny it, You can see it today with climate change.