Davis, California, United States
I first noticed this bird at one of our feeders yesterday (January 4, 2016). He returned to feed today and so I took his picture. He seems to be able to eat normally, despite having a large horn-like growth protruding from the top of his beak. This is the best photo I could get because everything is in the shade, but I think it shows the growth fairly well, especially if you zoom in on his beak.