Red lamp helps to prevent pecking and it is also easier on their eyes.
I use either green or blue for the ducks. They don't peck on each other, so that isn't an issue. The color is easier on their eyes.
Blue might be the best, but right after Christmas sometimes I can find the green exterior spot lights on the markdown table and if so, I buy all they have. I got 8 of them last year for 50 cents apiece. They had red ones, too, marked down to 50 cents.
I use the exterior spots because they won't break if a drop of water gets splashed on them.
I use either green or blue for the ducks. They don't peck on each other, so that isn't an issue. The color is easier on their eyes.
Blue might be the best, but right after Christmas sometimes I can find the green exterior spot lights on the markdown table and if so, I buy all they have. I got 8 of them last year for 50 cents apiece. They had red ones, too, marked down to 50 cents.
I use the exterior spots because they won't break if a drop of water gets splashed on them.