The mystery UFO socks were identified by a dozen or so knitters from Socknitter's Yahoo Group as Knitty's Broadripple pattern. Thank you everyone that looked at the pictures and helped ID the pattern.
One of the difficulties in figuring out the pattern is that I had increased the number of stitches to 72 where the original pattern calls for 56. (Between every pattern repeat I added a couple stitches.) I worked on the sock last night; it took 15 - 20 minutes but I figured out what I had done and am now easily knitting away.
And baby bird is flying. She unsteadily follows Mama Bird from tree to tree but she's flying.