THE MAN OF THE PIGEONS...

Yesterday Carlos told me the story of the old man who lives on the street.
This man is always outside our university, feeding the pigeons who are his only company. He seems to be happy living there, despite being dirty and hungry.
People are used to see him every day, and maybe sometimes they do not even notice he is there. Furthermore, everybody is worried about their own problems, so why would they worry about an old man as many others who live on the streets?
However, I would like to know what this man thinks, why he is there.
Does not he need to talk to somebody as well as everybody needs? Could it be that he feels good living his loneliness?
Besides this, it is said that he belongs to the Onas tribe, and that he does not want to live anywhere else.