i get young bird sickness every year and i clear it in 3 days . ill tell you how to get rid of it .get box of calpol with sachets in it from your chemist in side the sachets is liquid give them 2 sachets in drinker first day 1 next day and 1last day give no food first day barley 2 day last day light feed with corn. it works fore me i hope it helps you