We've never had a parasite problem before despite keeping poultry for about 15 years now. We bought a pair of adult turkeys about 5 months ago and we've noticed pretty much all the poultry making a yawning motion that probably started a few months ago. We had decreased egg production from the chickens, but blamed it on the heat. I'm thinking we brought gape worm in with the new turkeys. Well, we have about 60 hatched turkeys and we've lost four 14 week olds all making a gasping motion and one definitely had gapeworms in the trachea when we cut it open. I've heard turkeys are more susceptible to gapeworm than chickens. We're delaying putting the most recent hatches on the ground until we have this problem under control. What should we treat with and how often to get this nastiness under control? Sure regret buying adult birds and bringing this junk onto the property when we've never had it before.