During the winter months you will have fewer hummingbirds visiting your hummingbird feeders, but this is not to say that the feeders don’t still provide a vital source of nourishment to the birds that visit your feeders. In the winter, you may wish to change your ratio used to make your nectar solution from the usual 4:1 mix to 3:1 to help retard freezing of the nectar solution. Even in the winter, it is not necessary to put anything in the nectar solution other then sugar water.