My first Sparkly Fee line didn’t fail with missing eyes or cross beaks. It quietly stopped reproducing. Here’s what declining fertility taught me about inbreeding depression—and how I rebuilt the line with a stronger genetic foundation.

Developing a true breeding line takes far more than producing the correct feather color. Discover how selective breeding, hidden recessive genes, and long-term planning transformed a single recessive mutation into an established Egyptian Coturnix line.