December 4, 2022

rock squirrel on the south rim at grand canyon national park, arizona

Like in our own cities, conservation areas and parks here in Canada, squirrels are a common sight if not a nuisance at times, but we still love having them around.   The same can be said for the Rock Squirrels at    Grand Canyon National Park  .     The rodents are so plentiful and fun to see but still the Park’s staff warn visitors to be on the lookout for their bold behaviour!

Rock squirrel sitting on wall on the South Rim at Grand Canyon National Park, Arizona, U.S.A.

One morning, as Bob and I waited near Bright Angel Lodge for a Fossil Walk to begin, this Rock Squirrel kept us company on the rock wall that separates pedestrians from the sheer cliff below.  The Rock Squirrels at Grand Canyon National Park have become quite the pesky rodents owing, in large part, to the bad habits of humans who have insisted on feeding them.

Rock squirrel with a paper bag in its mouth on the South Rim at Grand Canyon National Park, Arizona, U.S.A.

As a consequence, Rock Squirrels throughout the Park have become habituated to the presence of people, come begging for food, and will unerringly slip into any unsealed backpack, bag, purse or satchel that is not sealed up tightly.  That is one problem, but the other is the fact that these squirrels carry fleas that can transmit diseases to humans, and they frequently bite the hand that feeds.

Rock squirrel sitting on a log at Grand Canyon National Park, Arizona, U.S.A.

Rock Squirrels are the largest ground squirrels in their range.  Their total body length can be anywhere from 17-21 inches long (430-540 mm) with the long bushy tail making up almost 44% of the total length.  The fur or pelage of a Rock Squirrel is speckled greyish-brown on top becoming mottled along its back with a subtle wavy pattern that extends to its brownish rump.  The fluffy tail is edged in white.

Rock squirrels on the ground at Grand Canyon National Park, Arizona, U.S.A.

A Rock Squirrel has a large, cinnamon-coloured head and a stout neck that has this rodent resembling tree squirrels more than other species of ground squirrels.  We could really see their resemblance to our own Grey Squirrels at home.  As Bob and I observed this pair below one lookout, we had to laugh at their capers as they rolled and tumbled across the narrow ledge under the protection of some sparse shrubs.

Jean and Bob at Hermits Rest on the south rim at grand canyon national park

On our first afternoon in Grand Canyon National Park, Bob and I rode a shuttle bus to the furthest western point on the Rim Trail at Hermit’s Rest.

Rock squirrel sitting in a bush at Grand Canyon National Park, Arizona, U.S.A.

Our explorations on the trail beyond the humble gift shop turned up another Rock Squirrel, this time in a Cliff Rose Bush right beside the pathway.  It was sheer luck that I noticed the squirrel, its position given away only by the bobbing ends of the branches.

Rock squirrel eating in a bush at Grand Canyon National Park, Arizona, U.S.A.

Rock Squirrels consume a wide variety of vegetative matter including fruits, nuts, roots, flowers, and cacti, as well as a small selection of invertebrates like earthworms, grasshoppers and beetles, but it surprised Bob and me to learn that they also will partake of small vertebrates like young Wild Turkeys and other bird species.  Near the Grand Canyon, foods such as the flowers, buds and beans of mesquites, agaves and junipers play an important part in their food supply.

Rock squirrel eating in a bush at Grand Canyon National Park, Arizona, U.S.A.

By sneaking up to the Cliff Rose plant, inside of which this Rock Squirrel was nestled, we had the privilege of watching it nip off and eat some tender blossoms and buds.  Rock Squirrels are adept at climbing trees just like tree squirrels and are often observed harvesting pine nuts from the Pinyon Pine Trees, but unlike tree squirrels, they make their homes in burrows.

Rock squirrel in a bush on the South Rim at Grand Canyon National Park in Arizona, U.S.A.

When at long last the Rock Squirrel became aware of our clicking camera, it poked its nose through the vegetation and acted surprised to see us there.  We were within a mere couple of feet and had a marvelous view of its long ears and notable white eye ring, both characteristics of this species of squirrel.  It was then time for Bob and me to move on.


A Rock Wren at Grand Canyon National Park

Mountain Chickadee at Grand Canyon National Park

Bighorn Sheep On Bright Angel Trail in the Grand Canyon

Frame To Frame – Bob and Jean

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