So I know that for egg-laying an adult Coturnix Quail needs (a least) 12-14 hours of (day)light, but I was wondering if there is such a thing as too many hours of daylight? And especially for young quail chicks.
I would assume that 14 hours and a couple more is fine, and probably also ideal to have at least 14 hours, but how long would be best?
From wikipedia (...) I see that the Coturnix Coturnix migrates, some even going as far north as Tromsø (i.e midnight sun), but that isn't necessarily the same as 24/7 being ideal
Also, there might be differences between the Coturnix Coturnix and the Japanese (which is the one my question is about).
Anyone seen any research or have first-hand experience with what the birds seems to be prefer?
I would assume that 14 hours and a couple more is fine, and probably also ideal to have at least 14 hours, but how long would be best?
From wikipedia (...) I see that the Coturnix Coturnix migrates, some even going as far north as Tromsø (i.e midnight sun), but that isn't necessarily the same as 24/7 being ideal

Anyone seen any research or have first-hand experience with what the birds seems to be prefer?