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Birds are a group of warm-blooded vertebrates constituting the class Aves (/ ˈ eɪ v iː z /), characterised 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.
- List of birds
This article lists living orders and families of birds. The...
- Kiwi (bird)
Kiwi have a highly developed sense of smell, unusual in a...
- List of birds by common name
In this list of birds by common name, a total of 10,976...
- List of birds
Die Vögel ( Aves) sind eine Gruppe der Wirbeltiere. Nach traditioneller Taxonomie werden die Vögel als eigene Klasse der Landwirbeltiere angesehen (Fokus des nachfolgenden Artikels), deren Vertreter als gemeinsame Merkmale unter anderem Flügel, eine aus Federn bestehende Körperbedeckung und einen Schnabel aufweisen.
Birds (Aves) are a group of animals with backbones. They evolved from dinosaurs. Technically, birds are dinosaurs. Birds are warm blooded. Their feathers help prevent loss of body heat. Modern birds do not have teeth. They have beaked jaws. Birds lay hard-shelled eggs. They have a high metabolic rate and a strong but lightweight ...
The scientific question of within which larger group of animals birds evolved has traditionally been called the "origin of birds". The present scientific consensus is that birds are a group of maniraptoran theropod dinosaurs that originated during the Mesozoic Era.
