Population Nosedive

The sad saga of the poor passenger pigeon has long served as an ultimate example of the awesome destructive power humans can unleash on the world.

Once one of the most populous animals in the world, with an estimated population of between three billion and five billion in the US alone, the bird's numbers plummeted from billions to zero in less than a century.

It was fitting that when the last lonely representative of her species, Martha, died, she was in human captivity, as it was people hunting the pigeons and carving up their habitats that did them in, wasn't it?

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