I meant round worms. Pin worms are similar. If you saw the round worms(look like spaghetti) in the poo, the chicken would have a severe infestation.
The float test will test for all intestinal parasites. Some sources claim that most chickens will have round worms, especially those that free range. Worms are more of a problem in wet places but still common everywhere. a bad infestation will make them sterile, eg., no eggs will be produced.
Good Luck!
thanks Ron! (as always, so informative!) is there anything else besides worms that might cause her behavior?