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Nature Reflections - March 22, 2007
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When is Gray not Gray? Nature Reflections by Jean Griffin Silly
question? Not when you are talking about the Eastern Gray Squirrel.
Normally a medium-sized squirrel with upperparts dark yellowish rusty,
especially on head and back; legs, arms, sides of neck, and sides of
rump with gray-tipped or white-tipped hairs, giving a gray tone to
these parts; hairs of tail dull yellow at base, then blackish, and
tipped with white; underparts white; ears with conspicuous white spot
at base in winter. So its colour is not just gray. But
like some other animals, such as the Black Bear, an Eastern Gray
Squirrel can exist in other colours - black, blonde and white. The
black or melanistic phase is fairly common in some areas, particularly
here in eastern Ontario. In fact I am more apt to see a black squirrel
(though sometimes with a white-tipped tail) than a gray one. (Notice I
always capitalize the true name of a species such as the Eastern Gray
Squirrel to differentiate against a gray squirrel - which might be a
gray of a different species). I
had a call from Pearl Whitfield who lives on Myers Cave Road about a
‘blonde’ squirrel she had visit her home on February 22, and again on
March 4 and March 13. This is an Eastern Gray Squirrel, though when I
started to search for more information on it, I found that it is indeed
a rare colour phase. The white phase apparently exists in small pockets
in both Canada and the United States, with a few of these being
albinos. Albinism is caused by blood in the capillaries which causes
the eyes to be pink and the skin to be pinkish and may cause problems
with both of these areas. White squirrels with black eyes are not
albinos but should more properly be called leucistic. Certainly
blonde and white squirrels are not common, possibly because they are
more easily spotted by predators. I have also read that sometimes these
unusual colours may be rejected by the more ‘normally-coloured’
animals, but I do not know if this is true. One article suggests that
the lightly-coloured ones would survive more readily in an urban
setting where competition for food and space might be less. Gray
squirrels are active year-round and arboreal; they cannot live in a
treeless environment. They feed on a great variety of things, such as
nuts, seeds, fungi, fruits, and the cambium layer of tree bark, as well
as bones and turtle shells. They store nuts and acorns in holes in the
ground. Gray squirrels mate in January - February and July in the
north. The blonde visitor at Pearl’s was in the company of a black one.
If they have mated, what colour will their offspring be? Observations: A Herring Gull was spotted by Shirley Peruniak at Sharbot Lake on March 13. Shirley also saw a Northern Harrier between Glen Tay and Perth on March 14. I was delighted on March 16 to add a new species to my ‘property list’. Attracted by the call of a Common Raven, I found it harassing a Golden Eagle that was flying over. On that same day I had the good fortune to see a pair of Red-tailed Hawks courting. Share what you have seen. Call Jean at 613-268-2518 or email currawong13@sympatico.ca.
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