01/29/2021
It was an exciting day for NRWA staff yesterday when they received this photograph from Kim Abely. Kim had encountered an albino porcupine and was curious to know how often this gene showed up in this particular species. The answer is that only 1 in 10,000 porcupines exhibit albinism so this was a very special sighting! Albinism occurs when both parents carry a rare gene that inhibits the production of the pigment, melanin. Melanin gives skin, hair, feathers etc dark coloration so albino animals appear white, with pink eyes and skin, as blood vessels are visible through the translucent cell walls. Porcupines are solitary, coming together only to mate. The female gives birth to one young - twins are extremely rare - hence the likelihood of both parents carrying the recessive gene is very slim.
For some animals, albinism is dangerous since it makes them highly visible and, as melanin is instrumental in eye development, they have very poor eyesight. Porcupines, however, already have poor vision but possess a keen sense of smell and excellent hearing so this rare specimen is unlikely to disadvantaged at all this winter, and can go about the business of nibbling on evergreens like hemlock and the soft layer of cambium under tree bark. Porcupines exude an odor that can, at best, be described as distinctive, so it already boldly advertises its presence. Since it packs an impressive 30,000 quills, this benign, waddling, mammal has little to fear from all but one predator.
Their vegetarian diet is so low in sodium that porcupines are drawn to our roadsides at this time of year to lick the salt spray. Unfortunately their slow gait is often their undoing. Hopefully, this highly unusual porcupine will serve as an ambassador this winter and encourage drivers to be on the lookout for porcupines on the roads.