I have 2 light brahmas amongst my new flock of 8 chicks. They are all 2 weeks old and getting their tailfeathers in. The area around the light brahma's tailfeathers looks red and sore, unlike the other breeds. Is it because the new feather shafts are so large compared to their downy fuzz? Neither the brahma chicks nor their companions are picking at the pink area. Anybody else ever noticed such a thing?