I brought four Dutch bantams this year two started laying a few months after i had them as they were young when i got them and two are about 5/6years old. The two older one have already had a moult back in march. Everythings been fine through the summer but now the ones cone has gone very very pale but is still eating, active etc but has stopped laying eggs for about a month but the cone has been this colour for the last few months. So i thought maybe it has mites. I put ant poison down in the hutch with newspaper and shavings. I regulary spray it with something to prevent mites etc. So i though over the weekend i will put abit of ant powder on the chickens on the night incase they are being bitten. Did this for two nights then in the morning the chickens tail had fell out! Really need help not sure whats going on.