My 12 week old chicks sometimes have a red tinge to there poo. Looks almost like a drop of blood. This has been happening for about 5-6 weeks but not enough to really worry me. We have some sort of tree that hangs over there run and just outside where they free range sometimes. The tree has a ton of those little red wild berries that are dropping this time of year. I was wondering if maybe the berries were adding the red tinge to their poo every now and then. It never happened when they were in the brooder. No one has died nor are they lethargic. I am only asking to make sure they are okay and I am not overlooking anything important that could possibly hurt them. Oh and they are still on medicated feed. They have been since day one. Thanks ahead of time.