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How to worm chickens
Check chicken droppings for signs of worms.
Many types of worms show up in the feces. Others create dirty or poopy eggs.
If only some of your chickens seem to have worms, it is still likely that they will give the worms to the other chickens, so it is a good idea to treat the whole flock. Send the feces to a veterinarian if your chickens are losing weight or having other problems and you don't see signs of worms in their feces.