A bird's mouth is called its beak.They are horny structures formed by the forward projection of the bird's upper and lower mandibles.Due to different ways of eating and types of food, the shape of the beak varies greatly.By observing birds' beaks, we can know what they like to eat[1]。
The mandible is covered by a horny sheath and protrudes forward.Mainly found in birds andplatypusAnd horned dragons.Existing birds have no teeth, and their beaks act as teeth and lips.As the forelimbs of birds have evolved into wings, the beak has various functions to replace their forelimbs, so the beak is very developed,[3]According to different life habits, it has various forms.In particular, the adaptation to predatory habits is more obvious. Generally, birds that peck insects and suck nectar have long and thin beaks, while the beaks of grain eaters are mostly conical.Occasionally, there are generalsCephalopodsIts mouthparts are called beaks.All hornosaurs had beaks for cutting plants, but also teeth for chewing.
Yellow billed ibis stork beak
In botany, the capsule calyx of liverworts and the small protuberance at the top of the capsule lid of mosses are called beaks.
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beak
Different from the human mouth, the bird's beak is composed of bones inside and a layer of horny structure outside. Its composition is the same as that of human nails, and it will continue to grow.Of course, the most important role of the beak is to eat, but in addition, because birds have no hands, the beak also plays a major role in breaking up: it can be used to pick up things when they want to transport them, fight when they are in danger, comb when their feathers are disordered, and so on.Birds have their own dietary preferences. Some are meat eaters, some are vegetarians, and some are meat and vegetarian.What they like to eat is closely related to the shape of their beaks.Meat eating birds have sharp hooked beaks, which are very suitable for tearing up prey.Fish eating birds have flat beaks, and some beaks also have some tooth comb structures on both sides, which can help them prevent fish from escaping when catching fish.Insect eating birds have sharp and slender beaks, which are good for them to catch insects from the cracks in the branches and ground.Most seed eating birds have conical beaks, which are like pincers. They can crush the hard shells of seeds and eat the seeds inside[2]。
