We found 2 Indian palm squirrels 9 days ago. They are approximately 2-3 weeks old (their eyes just opened today), and both weigh 17g.
While one is thriving, the other suddenly became ill. It's very lethargic, weak, and refuses to eat. For now, I can only get it to take a few drops of homemade hydration solution (boiled water, sugar, and a pinch of salt).
While taking water it is making very loud clicking noises, but at other times I can't hear any sounds coming out - e.g. when it is sleeping even if I put the ear to it I can't hear anything.
It hasn't eaten the formula in 10-12 hours now. It is peeing and pooping normally. Warm to the touch. When moving around, it is not steady and looks shaky. When I try to feed it, it tends to burry deeper into the nest (box) and sleep.
I don't know any good vets in my area, and I'm concerned they might do more harm than good, as they usually only handle cats and dogs, not squirrels. It's still early morning here, and I might be able to visit a vet in 2-3 hours.