Answer:
White bird, featherless, flying out of paradise. Flying over sea and land. Dying in my hand.
When can someone truthfully tell someone “well done” but think they did a bad job?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
Who spends the day at the window, goes to the table for meals. And hides at night?
In marble halls as white as milk, lined with a skin as soft as silk. Within a fountain crystal-clear. A golden apple doth appear. No doors there are to this stronghold, yet thieves break in and steal the gold.
Dark, feathery, and popular in Baltimore and fantasy books.