coturnix quail (Japanese quail) are typically raised for eggs and meat, although there are other choices too. Our Coturnix would start to lay eggs as early as 5.5 weeks, and all were laying by 9 weeks. We could butcher excess males as young as 6 weeks. If you don’t want to pluck, you can just slip them out of their skins. They are quick to butcher. We raised them, but stopped bc we needed to address the messy feed, combined with dropping trays caused large fly populations. We couldn’t spend the time to optimize that setup, so we stopped raising them. But, they were good for meat and eggs and for small spaces.