A Feather from nowhere

The sun scame out this morning and I went for a walk. As I opened the door to go out, this little feather, white and shiny, circled a moment in frond of my eyes, flew over my soldier and landed on the carpet behind me. 
Don't know where it came from, there are no birds in the staircase. I placed it on one the last year's leaves I have on top of the drawer. It can wait there until it wants to go somewhere else. 
Or the vacuum cleaner eats it.
Extra: feather on the carpet