In a post on Reddit, Mark narrated: "I immediately Googled baby squirrel care. You have to keep them warm and make sure they are hydrated. They get dehydrated extremely quickly! I fed her puppy milk replacement formula with a small syringe. It wasnt too difficult and there is a lot of good info on the internet. She now eats avocados, pears, apples, and whatever she finds in the yard. She comes inside a lot when the patio door is open. She usually just hangs out on the curtains. Its been really interesting and rewarding. I have a totally new perspective on these little critters."
Mark released Eleanor back into the wild but it insists on living at his house deck. Below are a couple of videos starring Eleanor courtesy of Mark.
Here's Eleanor feasting on walnuts: