An elastomeric feed port and a bird feeder having a seed reservoir with a seedopening fitted with such an elastomeric feed port is provided. The feed porthas anelastomeric seed control membrane with a cutout that forms at least oneaperturethrough which birds can access seed in the reservoir. The cutout is shaped tocreateflexible flaps or fingers adjacent the aperture in the membrane that partiallycover theseed opening to reduce seed spillage but that can be pushed aside ortemporarilydeformed by a bird when the bird inserts its beak into the cutout aperture toaccess seedtherethrough.