The present invention includes a method of filling a nectar bird feeder. The bird feeder includes a base with a nectar reservoir and an extension member that downwardly depends from the bottom surface thereof. A hanger is connected to the base and extends upwardly therefrom. A cover, which is releasably attached to the base, has a central aperture to receive the hanger therethrough. The cover is removed from the base and placed on a support surface. The base is then placed on the cover with the extension member being positioned through the aperture so it can be movably positioned so it is level for filling of the reservoir of the base with nectar. After filling, the base is removed from the cover and the cover is reattached to the base.