[elmar]

Black Swan Farming (Paul Graham)

http://www.paulgraham.com/swan.html

[andrewf]

Literal black swans are common in parts of Australia. https://en.m.wikipedia.org/wiki/Black_swan

[chris_wot]

There are no native white swans in Australia. They are all black.

[j0rd]

Let's not bring identity politics in to this discussion.