Towards the end of Swann's Way/Du côté de chez Swann, Proust (as translated by CK Scott-Moncrieff) mentions "the pigeons (in the Champs-Elysées) and their "beautiful iridescent bodies (shaped like hearts and surely the lilacs of the feathered kingdom)."
I'll concede the lilacs, although they aren't the first things I think of when I see pigeons. But in what sense are pigeons' bodies heart-shaped? I've seen lots of pigeons, including Parisian pigeons, and I can't make their bodies out to be heart-shaped at all.
