Quote: Yep, that's the theory.
Might work, you'd have to play with it and see how the light distributes...tho I would think running a heavy duty extension cord would be more convenient.
That's what I've got, was 'temporary' from an outside GFCI outlet, but it's been out for almost 2 years now as I don't know if or when I'll be able to run power out there in a more conventional manner.
You also need to think about keeping water thawed, which will take electricity also.
Also can you put this spotlight on a timer?
For winter laying light, it's best to have the light come on in the very early morning, like 3-4am in the deepest part of winter, so they can go to roost with the natural sunset.