Today I got to my mom's house and no one is here. I call my mom and she immediatly tells me there is a baby bird outside and that I should go and put it in a box before the neighbor's cat gets it. It was in the lowest branch of a tree and in easy reach of the cat. I eventually got it into a box, put a papertowel in the bottom and put some airholes for it. Its fairly large and has a lot of its feathers but still has the down. Most likely it is learning to fly (it can fly along the ground for short distances) but it can't get back up into the tree. What to do?