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.
I think these two 'guys' were born around 8/13. They looked like those when they got here. Who knows they seemed to have quadrupled in size. Here is the picture of the largest one. I don't see any barring on the wings. Neck is very white and lite taupe anywhere that's not white.