I have a flock of 12 hens, all about a year old, never wormed. My black cochin became lethargic two days ago, and is not interested in eating or drinking. I have her isolated. I found round worms in her poo today. My plan is to give them all Wazine now, then wait a few weeks and give them all ivermec. I understand that this is the best course of action for severely infested chickens, since the ivermec can kill the chicken if given to those with serious infestations. My question is this: the cochin is not at all interested in eating or drinking. I took a dropper and filled it with the wazine water (done at the dosage indicated on the bottle), but not much made it down her throat. She was just regurgitating most. Does anyone have a suggestion how I can get meds in her quick so she can start to recover? And how long will it take her to recover? Thanks.