The chicken evolved in an environment at no further than 30° North. Most wild chickens live closer to the equator - both north and south of that line. Natural means 11 to 13 hour days, year-around.
Of course, they did not evolve indoors.
Selective breeding over the last few centuries and...
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Are those 40 and 100 watt equivalent florescents, Gardeninggranny? Equivalent to incandescent, that is.
I have a small coop for a small number of chickens. It is in 2 rooms - one open to the outdoors, the other fully insulated. There is only a pop door between during the winter months...
We have just passed the equinox and are continuing the steady loss of daylight hours in the northern hemisphere. I live where there are hills both to the east and west so it isn't really 12 hours of sunlight and 12 hours of darkness this week.
Last year, I posted a list of cities] with their...