[All good things to consider, and he's musing while watching the little owlets.]

Aye, I remember it has a hollow that would be perfect for them. And I doubt it would be any less confusing no matter the age—their eyes aren't quite open so it might actually be easier to move them while they're still hatchlings.

Still, would likely need to use a bucket of sorts to safely transfer them, and Willow could sit on them the entire time to keep them warm. They would be none the wiser for certain then.