Pigeons in Buenos Aires

Across from the window I work it there is a concrete ledge. Two pigeons chill there. Today, one lay down, putting its feet underneath its belly and its head along the ledge. The other walks over and began to nestle her head into his neck. It seemed she was using her beak to clean him off or give him a little massage. Maybe he needed a couple seconds on the shoulders to chill him out after all that poking his head around so intensely. I wonder why humans don’t feel comfortable to give massages in public? And why do we think we are so much more important that pigeons? And why these pigeons are getting so close to this open window I’m standing in and why it’s freaking me out? I wanna learn to fly.