Black, Albino and Piebald Grey Squirrels Sciurus carolinensis

Black Grey Squirrel There is a race of melanistic Grey Squirrels with a gene for black fur (above: jet black or very dark grey-brown). See more below.
Albino Grey Squirrel Above is an albino Grey Squirrel, showing pink eyes and claws as well as totally white fur. Albinos occur naturally but rarely.
Piebald Grey Squirrel
Piebald Grey Squirrel
Piebald Grey Squirrel
Occasionally Grey Squirrels will have white patches on their fur (topside, since the underside is normally white) or be piebald (large expanses of white and of grey).
Piebald Grey Squirrel
Piebald Grey Squirrel
Piebald Grey Squirrel
Streaky stayed a couple of seasons in my garden.
Piebald Grey Squirrel
Piebald Grey Squirrel
Piebald Grey Squirrel
Son of Streaky had less white.
Black Grey Squirrel
Black Grey Squirrel
Black Grey Squirrel
Several populations of black Grey Squirrels (Eastern Gray) exist in the US, Canada and in southern UK (north Hertfordshire, Cambridgeshire). Because the black gene is dominant, they are increasing their range at the expense of greys.
Black-tailed dark Grey Squirrel
Black-tailed dark Grey Squirrel
Black-tailed dark Grey Squirrel
Many of the "black" Grey Squirrels are dark charcoal grey with a jet black tail, the latter without the white edging prevalent on normal-coloured Greys. Some have fully black fur as well (at least out of the sunlight).