 These hybrids are practically indistinguishable from the native common quail in these areas, though there are worries that such hybridizations could be detrimental to the native quail populations.As the Japanese quail is easily managed, fast growing, small in size, and can produce eggs at a high rate, it has been farmed in large quantities across the globe.Countries such as Japan, India, China, Italy, Russia, and the United States all have established commercial Japanese quail farming industries.