Why Grey and Black Squirrels Dominate Red Squirrels
Many people are not aware that the grey and black squirrels are in fact the exact same species of animal. The only difference is a genetic defect in black squirrels.
The grey squirrel, despite its name, isn’t actually grey but a combination of black, white and orange stripes. The animal has hormones in its pigment gene that regulate the development of the different colours as the animal grows. The squirrel starts off as black and a hormone stops the black fur from growing while another hormone switches on white and orange stripes. A genetic defect stops the black squirrel from developing the additional colours so that the animal has black fur throughout its life.
Black and grey squirrels interact freely and mate with each other and can be lumped in the same category when exploring their dominance over the red squirrel in Canada. Read More