Unusually Illinois Squirrels
The Fieldbook of Illinois Mammals by Donald Hoffmeister and
Carl Mohr (Dover 1972) does not list any squirrels that are
black with white tuffs or remaining red squirrels in Illinois.
One of my former AP Biology students at Augustana College
has reported that individuals with the above characteristics are common in
Rock Island. What species are these most likely? The Red squirrels may
be Fox, but the Black?
Updated and much expanded Mammals of Illinois, by Hoffmeister, should be
available at a decent library, and might help. Eastern grey squirrels often
come in black color phase, I've never seen any with "white tufts," whatever
exactly you mean by that. A true red squirrel is quite small, about the size
of a chipmunk, fox squirrels are reddish but even larger than greys, and
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Update: June 2012