I have my 1st ever chicks. They were mail order, shipped 4/16. I have seen an occassional diarrhea looking stool on my paper towel in the brooder. Today I finally figured out who is doing it, and looked immediately at the stool. It appears their are rice looking things in the diarrhea. I assume these are round worms. Chick seems to be health, eating, growing feathers, putting on weight so far. I called the hatchery and they said if you have round worms treat with Piperazine. I did some research online and in all the chicken books I have and it says not until 4 wks of age... I am 3 weeks from that age! This is my first try and I am only 5 days with these chicks. I need the help of somone who has some more experience with chicks.... Worm now or not....I have a total of 7 chicks, and they have all been together since the begining so they are all likely exposed. Any and all advice appreciated.