The Nature Discovery Centre - Dashing black swan on the lake! Originally from Australia, they are similar in size to white or mute swans. Although they can look completely black in colour,
QI - Quite Interesting - Until they were discovered in Australia, a "black swan" was used to describe something that couldn't possibly exist. | Facebook
![Haggard Hawks 🦅 on Twitter: "Because all swans were once presumed to be white, the Roman poet Juvenal used the expression BLACK SWAN to describe something unbelievable, or so fabulous as to Haggard Hawks 🦅 on Twitter: "Because all swans were once presumed to be white, the Roman poet Juvenal used the expression BLACK SWAN to describe something unbelievable, or so fabulous as to](https://pbs.twimg.com/media/D_L_nRUWwAAZDKu.jpg)