A bird feeder is provided having a seed reservoir with a side wall that has at least one seed access opening and a squirrel resistant feed port assembly having a seed access restrictor. The seed access restrictor has a body with an inner opening in communication with the reservoir side wall opening and an outer seed access opening that is spaced away from the inner opening and the reservoir side wall opening while being in communication therewith. The outer seed access opening of the restrictor is small enough and the length of the body is long enough that the squirrel resistant feed port assembly allows birds to access seed in the reservoir while blocking entry of the larger facial and head structure of a squirrel, thus preventing squirrels from gaining seed access.
