By observing the multitude of bird species that exist in nature, it is easy to see that there are several forms of beaks that differ in shape, size and strength. In fact, they are specific and adapted to the feeding mode of the bird depending on whether it is nectarivore, insectivore, granivore, frugivore, piscivore, omnivore or even carnivore.

For example, the hummingbird has a very long, tapered beak, a bit like a small straw that allows it to drink nectar from flowers. The swallow feeds on insects and then wears a short, thin and pointed beak ideal for capturing them in flight. In the house sparrow, its short bill, conical and robust, typical of granivores, allows it to break the grains. While the falcon is short, strong and hooked to shred its prey.

As far as our domestic birds are concerned, most of them have the specific beak of granivores. It is then short, powerful and solid having the ability to break the bark of grains to consume only their contents. As a result, the diet of these merry birds who brighten our houses, is based mainly on mixtures of grains specifically selected according to the preferences of each of them. Note that this type of diet also benefits from being partially supplemented with vegetables and fruits for their richness in minerals and vitamins.