because theyve been pooed on!
No, they cannot mate, and they aren't even found in the same area of the world. Australian Black swans are found in Australia, while Mute Swans (the most common white swan) are found in the Northern Hemisphere.
Australia
swans the birds - approximitly 50,000 all over the world
you can buy a black and white pinto anywhere in the world
in the world there are about a billion, billionaires, but how many are black or white, is not answered.
The world has never been black and white. However, the first televisions were all B&W.
Pokemon Black and White has already been released world-wide.
Swans are very large birds. A typically swan weights about thirty-three pounds and can grow to be sixty inches..... So based on this, I conclude that their skeletal-structure is rather dense and large.
somewhere in the world
There are roughly 500000 (five hundred thousand) mute swans thought out the world but there is no figure for swans in general as there are many different breeds.
Alice L. Price has written: 'Faces of the waterworld' 'Swans of the world' -- subject(s): Folklore, Swans, Swans in art, Trumpeter swan
Both England and Germany play in white jerseys and black shorts.