An elastomeric feed port and a bird feeder having a seed reservoir with a seed opening fitted with such an elastomeric feed port is provided. The feed port has an elastomeric seed control membrane with a cutout that forms at least one aperture through which birds can access seed in the reservoir. The cutout is shaped to create flexible flaps or fingers adjacent the aperture in the membrane that partially cover the seed opening to reduce seed spillage but that can be pushed aside or temporarily deformed by a bird when the bird inserts its beak into the cutout aperture to access seed therethrough.
