Albino-like Penguin

From National Geographic, tourists found an albino-like penguin which is believed to be the case of rare genetic mutation. 

Penguin expert, P. Dee Boersma said the bird actually suffers from isabellinism, a genetic condition that dilutes pigment in penguins' feathers resulting in lightening of bird's dark color, turning it into pale brown or "blonde" penguin.

This genetic condition may affect the penguins' survival as penguins often used their black back in order to camouflage themselves from predator and prey, though no study has yet been done on this subject matter.

In case if you don't know how original penguins look like. 

Normal penguin VS Albino-like penguin

   

Genetic mutation in other animals

Source: Here