Premium Nutritional Products Inc. is recalling several formulas of its ZuPreem line of bird food due to calcium levels higher than the recommended amount, which can pose a health threat to birds.

The recalled bird food products include ZuPreem Medium/Large and Large FruitBlend With Natural Fruit Flavors. The affected products have an expiration date of November 13, 2013, or November 2013, and are marked with lot numbers 598405052 or 598405072.

Those who have purchased the recalled bird food should discard the unused portion and return the packaging to the place of purchase. For more information, contact the company at +1.800.345.4767.