Is it for I to wonder why (or just do and die) I wonder.
There's a huge poster for 'Cartel' (in French), the latest Brad Pitt and Co. vehicle, right next to them but I don't know if they're related.
But it makes for some serious pigeon scouring - they're looking a bit perplexed as they peck - and a jolly vista for those of us who stumble across them.
As you can see, they're already disintegrating so better catch them while you can.
And why not...