Harley is a long-haired variety. They have long thin wispy fur with no undercoat.
It is caused by a recessive gene (*a recessive gene is when a gene needs to copies, one from each parent to be expressed. It can be carried and not show).
The variety was discovered on September 1st 2002 from a pet shop by Odd Fellows Rattery (OFR). They named the rat Harley and that is how the variety was given its name! So far it has stuck! Harley was joined by others of the same coat in May of 2003, with her litter of babies and it was then known it could be passed on and with those babies, the variety was born so to speak.
Hooded Crow
The hooded crow, with its contrasted greys and blacks, cannot be confused with either the carrion crow or rook. Except for the head, throat, wings, tail, and thigh feathers, which are black and mostly glossy, the plumage is ash-grey, the dark shafts giving it a streaky appearance. The bill and legs are black; the iris dark brown. Widely distributed, it is also known locally as Scotch crow and Danish crow. In Ireland it is called grey crow, just as in the Slavic languages and in Danish. In German it is called “mist crow” (“Nebelkrähe”). Found across Northern, Eastern, and Southeastern Europe, as well as parts of the Middle East.