I feed the squirrels in my backyard peanuts, and I've noticed one squirrel that I've fondly named "Momma" (due to her having pups this last year), her tail is "deflated", it still has fur, but it's not nearly as fluffy as every other squirrel. She seems healthy otherwise, and no other squirrel seems to be having this issue. Pics attached to show her "deflated" tail. I have no intentions on intervening in any way as she is wild, just curious what might be going on with her!