Outline of birds

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House sparrow, Passer domesticus

The following outline is provided as an overview of and topical guide to birds:

Birds (class Aves) – winged, bipedal, endothermic (warm-blooded), egg-laying, vertebrate animals. There are around 10,000 living species, making them the most varied of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich.

Biological classification[edit]

Cladogram showing the most recent classification of Neoaves, based on several phylogenetic studies.
Further information: Biological classification

Nature of birds[edit]

Main article: Bird

Bird anatomy[edit]

Main article: Bird anatomy
External anatomy (topography) of a typical bird: 1 Beak, 2 Head, 3 Iris, 4 Pupil, 5 Mantle, 6 Lesser coverts, 7 Scapulars, 8 Coverts, 9 Tertials, 10 Rump, 11 Primaries, 12 Vent, 13 Thigh, 14 Tibio-tarsal articulation, 15 Tarsus, 16 Feet, 17 Tibia, 18 Belly, 19 Flanks, 20 Breast, 21 Throat, 22 Wattle, 23 Eyestripe

Bird behavior[edit]

Main article: Bird behavior

Types of birds[edit]

Orders[edit]

Families[edit]

Subfamilies[edit]


Genera[edit]

History of birds[edit]

Study of birds[edit]

Main articles: Ornithology

Aviculture[edit]

Main article: Aviculture

Bird diseases and parasites[edit]

Main category: Bird diseases

Threats and conservation[edit]

Persons influential in the field of birds[edit]

Artists[edit]

Main category: Bird artists

Ornithologists[edit]

Writers[edit]

Birds in culture[edit]

See also[edit]

References[edit]

External links[edit]