Celadon Coturnix Quail are a genetic variation of the domestic Coturnix quail (Coturnix japonica) — also known as Japanese quail — that carries a recessive gene called the celadon (Ce) gene. This gene causes hens to lay beautiful blue or blue-green quail eggs. Celadon quail look like regular Coturnix quail in body shape, size, and behavior. The Celadon gene affects egg color only — it does not change feather color or physical appearance. Because they are Coturnix quail, they share the species’ friendly, easy-care nature and adaptability to a wide range of backyard setups. Feather color among Celadon quail can vary widely (e.g., Tuxedo, Rosetta, Silver, etc.) because the celadon gene doesn’t influence plumage. These quail are not a separate species or breed — they are Coturnix quail with a specific genetic trait affecting egg color only. What the Celadon Gene Does The celadon gene (Ce) is recessive, meaning a bird must inherit two copies (one from each parent) to lay blue eggs. Birds with only one copy are carriers — they don’t lay blue eggs but can pass the gene to offspring. Birds with no copies have standard Coturnix egg colors (cream, tan, brown speckled). Because of this, careful breeding and record-keeping are essential if your goal is to produce consistent blue egg layers. Breeding two homozygous Celadon birds guarantees all offspring carry two copies and will lay blue eggs.