Abstract: The present invention provides a feeding system for dispensing liquid food to a bird. The system includes a container of concentrated sugar solution that is dilutable with water at a selected dilution ratio of concentrate to water and a feeder to be supported by a support structure. The feeder includes a reservoir having a selected volume and an index marking correlating to a selected partial volume whereby the ratio of the partial volume to the difference between the selected volume and the partial volume is equal to the dilution ratio for the concentrate. The base of the feeder mounts to the reservoir and has at least one feed outlet to make the liquid in the reservoir available to the bird. The present invention is also directed to a method of providing nectar solution to hummingbirds.