I would worm them first because I doubt it is blackhead disease. It is very rare for an adult to get it. Chicks and young adults yes but not mature ones. How old are these"adults" ? After the last wormer treatment you can do the blackhead, you just do not want to mix them both at the same time. Are these adult birds free ranging? There is always a sign but sometimes we just do not see it in time.Thanks for all the info everyone. This was only our second year hatching. We did three hatches last year 1 pea, 1 goose, 1 turkey, 1 duck. All survived until let to free range. Of the 12 peas in the hatch last year 9 are alive and well. We sold all the geese, ducks and turkey. We have hatched 3 batches this year. 2 peas and one turkey. One turkey batch is stil in incubator. So I'm new to hatching but tring my best. I will take everyone's advice into account when my turkey start to hatch.
One a sad note we are looseing adult peas. I have had 2 die unexpectedly. We have had them 3months. Bought them from a great breeder and were doing well. We wormed them when we got them. With puncture and ivermectin. It was brought to my attention to treat maybe for blackhead. So I guess if they are still alive in 18-30 days we will treat for blackhead. So far all mine I raised here are showing no signs of illness, but the ones that died really didn't either.
I also wanted to post that I have an incubator full of eggs that all went in the same day, so this batch of eggs should all hatch out the same day? Well I candled every egg in the incubator and I have some eggs that I can see a heart beating (like on the 7th day) and others that have a little more progress and I have about half of them with baby chicks moving around so I doubt that just because the eggs went in the same time all will hatch the same time. I use a candler to check the eggs. Sometimes I will see movement sometimes I do not. But the eggs that are only showing a heart beating will end up in the incubator more then 30 days.
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