Sparrows flying through houses had it so much easier
in Anglo Saxon times.
Ya fly in one side, be symbolic of man's life on earth, and fly out the other side.
A bird got carried into our house this morning with the laundry ( we hang out laundry out to dry on clotheslines)
and flew around running into walls and hopping about on high bookshelves
until we let the screen out of an upstairs window and chased it out with flapping shirts - breaking only one lamp in the process.
And that would be metaphorical for....what?