It's a White Eyed Vireo hatchling that I found here.
Look at his fat little knees and clubby feet!! =D =D Here's the update article from last week: Yukon ready to take a Chance.
I'm glad there's a requirement in baaaaabyanimals to say what animal you're posting. This way, I can skip the kitten, puppy and bunny posts. Uncommon animal babies are so much cuter, especially animals that I've never heard of before. =)