This is exactly why I am researching everything I possibly can about breeding stronger, healthier, disease resistant, and more resilient birds and silkies. I only got into silkies this year but over all they do not seem as robust and resilient as any of the other breeds I've kept. I don't know why that is, but I do plan to work to improve it. I love Silkies, but I don't particularly care for paying the amount I pay for them only for them to die.
Hopefully I am able to make some contributions to strengthening their genetics. Btw- if anyone knows of any good resources for reading about that topic- I'm all ears!
silkies are slow growers. as they have a lot of feathers they need more protein. years ago I had white silkies. they never got sick. black with huge crest probably were bred to some other breed in order to get bigger crest. they are not as strong as the white ones - at least in my experience.