When I lived in Omaha, Ne. (54 yrs ago) We had an occasonial Black Phase Fox Squirrel in our Neiborhood. Now that Neighborhood is about 75% Black phase.Been living about 40 mi. south for 53 yrs. beginning to see an occasional Black, and the Grays are moving north. Grays a very noticabily smaller. On a sunny Winters day I will see all 3 feeding on acorns and Hickory nuts at my Cabin at Warsaw,Mo. (326 mi. south of Home) I'm jealous as Hell of their arboristic talents. I have tried every thing to start Oak & Hickorys from nuts.JUST Can't do it. But let a Squirrel spit one on the ground, Seems to grow before he finishes covering it.Got 5 Black Walnut trees to prove it. Maybe I should gather a bucket of Acorns and Hickory nuts and leave them in the tree row .Maybe the little Buggers will plant a few for me........Be Safe >>>>>>>>>>Wally