If you thought that the 'owl express' didn't exist beyond the world of J. K. Rowling, this video posted by Tiny Animals account on Twitter will prove you wrong.
The footage shows a white eagle-owl sitting on a window ledge, holding a letter in its beak.
The girl filming the bird opens the window and accepts her mail, which the owl doesn't seem to let go of so easily.
After completing its task, the feathered deliverer patiently waits for a reward, but alas none comes, leaving the bird perplexed.