I was just on my way to the greenhouse and I saw a young house sparrow on the brink of fledging. It was in direct sun but it was lively so I tried to put it in a box with straw in but it easily jumped out. It definitely couldn't fly and it wasn't hurt. What should I do? Should I even do anything? Please help me in anyway you can I found it at about 4:40 today - Friday. It isn't eating or drinking.