Hi. I have been having a problem with my chicks for about one year. Each time the hens hatch some out most get some kind of hard brown wart like tumor on their beak and many die. In a typical case I will notice one or two small red 'pimples' on the chicks beak. Quickly they turn dark brown, almost black, and start growing into big bumpy warts. They are very hard and solid. Some birds the growth stops.. but they keep the hard brown lump on their beak for a long time.. many weeks, before it falls off, usually leaving a scar or deformed beak, or even a hole in the side of the chiccks face. Some birds the growth keeps growing...getting huge and spreading all over the beak and inside it.. down the throat.. which makes eating and drinking for the chick very difficult.. and they eventually die. I stopped letting the hens hatch out any chicks for about 6 months... and then started again a few weeks ago. Sure enough the chicks developed the same symptom and I lost all 3 of them. I have been keeping and breeding chickens for about 12 years and I have never seen anything like this before. Does anyone have an idea what this disease could be?