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aves    
n. 鸟类

鸟类

Aves
n 1: (ornithology) the class of birds [synonym: {Aves}, {class
Aves}]

Aves \A"ves\, n. pl. [L., pl. of avis bird.] (Zool.)
The class of Vertebrata that includes the birds.
[1913 Webster]

Note: Aves, or birds, have a complete double circulation,
oviparous reproduction, front limbs peculiarly modified
as wings; and they bear feathers. All existing birds
have a horny beak, without teeth; but some Mesozoic
fossil birds (Odontornithes) had conical teeth inserted
in both jaws. The principal groups are: {Carinat[ae]},
including all existing flying birds; {Ratit[ae]},
including the ostrich and allies, the apteryx, and the
extinct moas; {Odontornithes}, or fossil birds with
teeth.
[1913 Webster]

Note: The ordinary birds are classified largely by the
structure of the beak and feet, which are in direct
relation to their habits. See {Beak}, {Bird},
{Odontonithes}.
[1913 Webster]


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  • Bird - Wikipedia
    Birds are a group of warm-blooded theropod dinosaurs constituting the class Aves, 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 vertebrate skeleton
  • Bird - Aves, Species, Orders | Britannica
    Bird - Aves, Species, Orders: In classifying birds, most systematists have historically relied upon structural characteristics to infer evolutionary relationships
  • Birds or Class Aves - Description and Characteristics
    Learn about birds or class Aves Discover what a bird is, its characteristics, and its relationship to mammals and dinosaurs
  • Birds of the World - Cornell Lab of Ornithology
    Comprehensive life histories for all bird species and families Unlock species accounts, maps, multimedia, and bird family overviews For public and academic libraries, government agencies, consulting firms, nature centers, nonprofits, and more
  • What Are Aves? Defining the Class of Birds - Biology Insights
    Aves, commonly known as birds, represent a distinct and diverse class of warm-blooded vertebrates They are characterized by unique features and thrive across nearly every environment on Earth Birds are defined by feathers, structures composed of keratin unique to this class
  • Aves - Definition and Examples - Biology Online Dictionary
    Aves is a class of warm-blooded vertebrates that includes birds They have wings modified from their forelimbs and developed flying muscles
  • Introduction to the Aves - University of California Museum of Paleontology
    The vertebrate class Aves includes the birds, an extremely distinctive and successful clade, with an estimated 9000 species worldwide, including the snowy owl pictured here
  • Aves(Birds) | Animal Kingdom | Grade 11 | Biology | Khan Academy
    In this video, we explore the defining features of Aves—from feathers and beaks to pneumatic bones and specialized lungs Learn how their body structure supports flight, movement, and survival
  • Class Aves - GeeksforGeeks
    Aves are warm-blooded vertebrates that lay eggs and have specialised forelimbs to fly They are bipedal, with an endoskeleton that is fully ossified and long bones that are pneumatic in nature Aves is an animal class that mostly includes all birds and their extinct ancestors
  • Introduction to Aves (Birds) - Zoologyverse
    Aves (Birds), scientifically classified under the class Aves, are warm-blooded vertebrates characterized by feathers, beaks, and laying hard-shelled eggs They are found in almost every ecosystem, from dense rainforests to arid deserts, showcasing incredible diversity in size, color, and behavior





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