a nectar feeder for hummingbirds is disclosed . the feeder includes a container configured and arranged to store nectar feed . the container has a top end and a bottom end . a spout depends from the bottom end of the container with an exit port defined thereon . a base tray positioned below the container . the base tray is further configured and arranged to contain nectar feed therein . a vertical member extends from the base tray . a float is positioned between the container and the base tray . the float engages the vertical member to prevent substantial independent lateral movement of the float within the base tray . the float carries a stopper with a substantially flush surface positioned below the spout . in operation , the nectar feed flows through the container and into the base tray until the float rises to a level where the stopper engages the exit port on the spout to prevent fluid from flowing into the base tray .