4 of my bantams have black tongues not the entire tongue just from the tip to the middle of the tongues 2 are in the same tractor and the other 2 are in a seperate tractor and have never had contact with one another there tongues were pink before last time i looked in there mouths wa atleast a month ago and were fine they are not acting sick and are healthy doing normal chicken things 2 of them are growing there feathers back from a molt i guess and have new feathers or quills all over ive never heard of black tongue and cant find anything on the net o do with it there tongues are still moist and they are drinking and eating fine any info would be great as i need to know what it is and if its something i can help them by treating