Aves
Aves
Aves (/ˈeɪviːz/; from Latin avis meaning "bird"), also known as birds, are a group of endothermic vertebrates constituting the class Aves. They are characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
Etymology
The word "Aves" comes from the Latin word avis, which means "bird". The term was first used in the 18th century by Carl Linnaeus in his work Systema Naturae.
Pronunciation
The term "Aves" is pronounced as /ˈeɪviːz/.
Related Terms
- Endothermic: Refers to animals that are "warm-blooded". Birds are endothermic, meaning they maintain a constant body temperature independent of the environment.
- Vertebrates: Animals that have a backbone or spinal column, including birds.
- Feathers: One of the external coverings of birds. They are considered the most complex integumentary structures found in vertebrates.
- Metabolic Rate: The rate at which the body uses energy. Birds have a high metabolic rate due to their ability to maintain a constant body temperature and their high level of activity.
- Four-Chambered Heart: Birds, like mammals, have a heart with four chambers which allows for efficient oxygenation of the blood.
External links
- Medical encyclopedia article on Aves
- Wikipedia's article - Aves
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