A very cute story poem, my friend. I can picture it as I read, always a good thing.
Here in my neck of the woods (literally) we have black squirrels as well as red and grey, plus chipmunks and raccoons. The cats generally ignore them all!
Very nicely done.
Could be that your chubby friend gave them what for when you were not looking.
Grey squirrels can be fierce when cornered or attacked. I had a cat who attacked one and lost an eye foe his trouble. My cats are all kept inside, now, and they watch the squirrels from behind the window, where everyone is safe!
There seems to be an understanding as winter comes along that they all need to get ready. You painted a wonderful picture of nature and her bounty, gotta love the critters. Loved it!