I don’t know where to post this but I have a burning question: Why do some Eastern Grey Squirrels grow to be three times the size of most Eastern Grey Squirrels? I live in an area where there are a lot of these grey squirrels. I watch them every day in my backyard. But three times this spring I hav…

Sounds interesting, if you can ever get a side by side photo, I’d love to see these rodents of unusual size

Agreed, would help to know your location as more than one species might be present.

Just scanned your observations. There’s not much in those photos to indicate the size of the squirrels or their coloration. You seem to be right at the northern limits of fox squirrel distribution, so it’s possible you have some of them. Photos showing fur color would really help, as would photos wi…

I updated my post with coordinates and photos. What, if anything, can you tell me?

Thanks for your research. I updated my post with photos, including one regular grey squirrel in a tree for comparison. I am hoping the tree limbs will serve for scale since that is the best I’ve got. We have red squirrels here but they are much smaller than the grey squirrel and not as plentiful. He…

Maybe you’re seeing gravid females which appear heavier.

In addition to the pregnancy explanation, it may be that some of the slimmer squirrels have already molted their winter coats and the larger ones have yet to to molt. For comparison, this is the same individual Eastern Gray Squirrel in a winter coat and summer coat (photo from reddit): [image]

I agree with Eastern Grey squirrel.It may be a pregnant female that hasn’t molted. If if was cold that morning she may also have fluffed her coat. I believe the photos lighted well enough that the color of fox squirrel would have shown.

Pregnancy or molting, etc. cannot possibly explain what I’m seeing. The difference between looking at these very large squirrels and regular Eastern Grey Squirrel is like looking at an overweight six-foot four-hundred pound man versus a regular 5 foot 6 woman weighing in at 130 pounds. Pregnancy, we…

Maybe many factors are being combined here…

Very Large Squirrels

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Very Large Squirrels

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