Hi yall! Im new to chickens, and have some worming questions. I recently discovered that some (possibly all) of my 60 chickens are wormy. Symptoms: varying types of poop--i.e. some looks like chocolate syrup; some is a gooey, foamy, milky puddle; some is a loose diarrhea version of normal--and Ive also seen some pink pieces of something in a few of them.
A few chickens still have the healthy/normal poop (semi-firm and grey w/white cap). Im thinking its worms, as Ive found two dead round white worms, about 2 long and 1/16 wide.
Im wondering what type of worm this is, what kind of wormer to use, and how to prevent them from getting wormy again in the future. I have two flocks (breeds are: Rhode Island Reds, Buff Orpingtons, Wyandottes, and Americanas), one flock has about 40 pullets just starting to lay, and the other flock has about 20 six-month-old roosters that I hope to butcher this month. Thanks in advance for all your help!!!

Im wondering what type of worm this is, what kind of wormer to use, and how to prevent them from getting wormy again in the future. I have two flocks (breeds are: Rhode Island Reds, Buff Orpingtons, Wyandottes, and Americanas), one flock has about 40 pullets just starting to lay, and the other flock has about 20 six-month-old roosters that I hope to butcher this month. Thanks in advance for all your help!!!