Re: First Hummingbird Arrived This Morning!
I use a 4:1 ratio and a variety of food coloring.
Careful observation and the length of time it takes them to empty a feeder suggests that the color of the nectar is irrelevant to them, and they don't care if there is no coloring at all. I use red, yellow, blue, and plain with no difference in the feeding rate. The colors are to please me. The hummers don't care.
It is the little yellow plastic blooms on the feeder that seem to attract them, but I have seen them feeding from feeders that don't have the yellow blooms attached.