u know at first i thought it was coccidiosis and they were treated for this because i had this before over a year and a half ago i lost one and the rest came on well in my head thats wat i thought this was but it isnt its the same way weight loss, goin of the food and lethargy to be honest it hasnt been 2 weeks roughly as when my young birds then got sick i eliminated them thinking that was it but 2 weeks later it was back i had aswell disinfected the drinker and always have a garlic clove in the drinker is virkon s safe in the water and how much thanks.