So the Avian vet didn't find any cocci not worms but they have diarrhea. She put them on an antibiotic. Switched them to a medicated feed. Estimates that they are 3 - 31/2 weeks old. If the two that perished were that much smaller she estimated that they were probably under a week. She doesn't think they are purple - too much white. She thinks they are Pied something.