After losing my hen last night to what seemed like a choking incident, I did some more research and someone suggested it was probably gape worm. It makes sense because she would often cough and shake her head since the day I purchased her (last year), but since I was so unfamiliar with the disease as was my vet, I just brushed it off as something she alwasy did. However, after her gasping and convulsing for about 5 minutes and then dying, I was lost as to what killed her. Now I am pretty sure it's gape worm given her open mouthed desperation to breath last night. I have read several things on how to treat gape worm and now I need want to treat my whole flock but am not sure the most effective way to do this is. No one else in my flock has ever shown symptoms, but I would rather be safe. As far as treatment, I also was curious as to egg withdraw time. I have a couple of egg customers that may have to wait until the medications are out of their system. Thank you in advance!!