Mealworms (Tenebrio molitor) have historically been the most popular insect used in bird feed, as they were approved for animal nutrition in the European Union earlier than other species. Hermetia illucens has a different nutritional profile. Hermetia illucens larvae contain, among other things, a significantly higher level of calcium. In addition, their fat is characterized by a high lauric acid content, which is valued for its ability to support gut microbiota and immunity. For this reason, Hermetia illucens is increasingly considered a more functional option in bird nutrition.