"There's a little baby fledgling bird hanging out on the patio, and I don't know what to do..."
The domestic consensus is that we should do nothing: not interfere, certainly not handle it. It may just be hangin' out after a long flutter. And if it is the child of mockingbirds, then at least one of its parents knows exactly where it is, because the bloody bird has not stopped making a ruckus all around our yard. It even threatened me this morning (tho' I do not think the baby was there this morning; I think I would have noticed), never mind the poor cats who wander through.
I dunno; of course I dunno, what do I know? We'll see. If you want to bubble over with advices, feel free - but as soon as two advisors start contradicting each other, I shall stop listening, because elves.
[Update: and it's gone, five minutes later. Yay! I wish I'd stayed to watch, but alas, I had to post...]