No, they've been very healthy - due to the fact that they are hybrids, I think. Kind of like a mutt dog...they say they are healthier than pure breds? Old wives tale or truth??
All I know is my 'stars' have been excellent birds and I'll certainly get them again. I will say that with the ones I have had, when they molt it is disturbing - my other breeds seem to molt a little at a time. When the stars did, it was all at once - they looked pretty ragged! But their new feathers came back in bright and shiny!