The snowy white tundra swan breeds in the Arctic and migrates ... Tundra swans winter on the water and sleep afloat. They are strong and speedy swimmers that take to the air with a running start ...
A black swan, rarely seen in the UK, has been spotted in Stratford. Shakespeare's hometown typically attracts huge numbers of white swans on the River Avon, with an estimated 80 thought to be ...
From there, the terms grey and white swan were born. The former is used to describe events that are more predictable than black swans, while the latter is characterized as something almost certain ...