During a vacation excursion to the Orlando area, Bob Glesener
happened upon a Wildlife Rehabilitation and Refuge Center known as Back
To Nature Wildlife, Inc. There amongst cages housing everything
from injured bald eagles to half-wolves was a white squirrel
named
Melanie (could the name be a play on words referring to the pigment melanin
she is so conspicously lacking?). Melanie shares her cage with her
sister Missy who, although raised by human hands from the same litter,
is a normal gray squirrel. Melanie, herself, is not only white but
has the same basic pattern of pigmentation, i.e. dark markings on the head
and paws, a d
orsal
stripe and dark eyes, as the white squirrels of Brevard. This pattern
is sometimes referred to as the "blonde" color variant. However,
her head patch is broader
than that of the North Carolina population. It will be
interesting to see if Melanie's dorsal strip falls within the limits of
variation of the Brevard population, once that study has been completed.
Upon first observation, it too would seem to be broader than that of our
own squirrels. According to popular folklore, white squirrels arrived in
Brevard from Florida. There a circus train crash released white squirrels
of questionable origin who established a population in the
surrounding Jacksonville area.
A nearby resident delivered a pair to relatives
in Brevard in 1949 who eventually "released" them. Today, white squirrels
with similar markings are found from Lake Toxaway to the west and Hendersonville
to the east (a span of approximately 50 miles), interbreeding with native
gray squirrels. They apparently spread from Brevard by either migration
or trapping. Melanie was captured in
Kissimmee
FL where observers feared for her survival because of her contrasting coloration
(see Melanie's Biography from Back To Nature,
Inc.). Other than Melanie, capturers were unaware of white squirrels
in that area at the time. However, since the appearance of
an article in Back to Nature's newsletter Wildlife Matters,
numerous sightings have been reported in the greater Orlando area (including
Brevard, Osceola and Polk Counties). Kissimmee is some 160 miles
south of Jacksonville (although we have yet to identify a white squirrel
population in that city, there are populations West in the panhandle -
see below). Could Melanie be derived from the same parental stock
as the Brevard population? Could genes for the white morph have spread
through migration or trapping to Kissimmee? Perhaps, the alleged
train wreck happened further south than legend would have it. Or
is it possible that this is merely a reoccurring genetic anomaly arising
independently in many locations only to be weeded out because of its selective
disadvantage, i.e., higher rates of predation and social
ostracism?