I have had several of my birds this year just be "poor doers" and occasionally die for no apparent reason. So the latest one that had seemed fine to start with is a Russian Orloff cockerel, and since I was afraid I would lose him I brought him into the house to monitor. I discovered that he had mites, and dusted him for those. Then this evening when I was filling his waterer, I saw that he had passed a huge tangle of worms! I am honestly not sure what type they are, they are long and skinny and had a reddish color tint to them. I have no idea what wormer to use, and of course since I will need to do all my birds I need one that can be used on laying hens/meat birds with a reasonable withdrawal time on it.