Birdseed is a common term used to refer to food specifically designed for birds. However, there are a number of different terms that can be used as synonyms for birdseed. These include bird feed, bird food, bird mixture, bird treats, and avian diet. Each of these terms is used to refer to the food that is used to feed birds, whether they are domesticated or wild, and they can include a range of different ingredients such as seeds, fruits, and insects. Regardless of which term is used, all of these options are designed to provide birds with the proper nutrients they need to thrive and stay healthy.