The only thing that came to my mind, is that probably the other birds can try to eat the bread from his neck, so that probably can help to remove it, I don't know is just too cruel to see it take a pic and not even try to remove it... but I have to say that are many good people out there too, I saw a small flock yesterday, and I had some seeds in my packet but not that much, so they were able to eat something, I went to the post office and when I left here was this old lady feeding them with bird seeds, and she was very obvious doing it and enjoying that, I always do it when people are not around or trying to be more discreet, but this woman was doing it in front of everybody, it was nice to seen someone that was not afraid about the law and others...
Ivette