Abstract: An insect inhibiting hummingbird feeder has an open top hollow reservoir for storing a supply of simulated nectar, a base in fluid communication with the reservoir, a plurality of apertures in the base for allowing hummingbirds to drink the simulated nectar, and a plurality of perches on the base adjacent the apertures. A removable cap on the open top portion of the reservoir has a curved outer top surface sloping downwardly and upwardly from a central portion thereof. A fastener for suspending the hummingbird feeder from a tree or other mounting surface is secured to the central portion of the cap. An upwardly opening frusto conical receptacle surrounds the central cap portion and is filled with an insect inhibiting fluid such as oil. In use, the oil provides an effective barrier which prevents insects, and especially ants, from travelling down the suspending fastener to the simulated nectar filled reservoir.