One captive population of black swans in Lakeland, Florida has produced a few individuals which are a light mottled grey colour instead of black. White black swans are also known to exist; these individuals, which are leucistic, are believed to occur rarely in the wild.
ONe CApTive poPUlAtion of BLACk swAnS In lakeland, FlOrIdA Has ProduCED a FEw iNDividUaLS whIch ArE a lIghT mOttLED greY colour INsteAD of blacK. White BlAck swaNS ARE Also knoWn tO eXist; thEse indiViduaLs, Which arE leUcisTic, are beLIeved to occuR rarely iN tHe wilD.