Overview of and topical guide to birds
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 .
What type of thing is a bird?[ edit ] A bird can be described as all of the following:
Life form – entity or being that is living or alive.
Animal – multicellular, eukaryotic organisms of the kingdom Animalia (also called Metazoa). Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their lives. Most animals are motile, meaning they can move spontaneously and independently.Biological classification [ edit ] Cladogram showing the most recent classification of Neoaves, based on several phylogenetic studies Bird
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 EyestripeBird anatomy
Bird behavior
Appearance
Small
Black
Pink or grey
White
Azure-winged magpies
Grey jays
New World jays
Balearicinae (crowned cranes)
Gruinae (typical cranes)
Family
Genus
Species (extinctions: † indicates a species confirmed to be extinct; ₴ indicates evidence only from sub-fossils)
Nestoridae
Strigopidae
River martins (
subfamily: Pseudochelidoninae ·
genus: Pseudochelidon )
All other swallows and martins (subfamily: Hirundininae )
Genus Aegypius Gypaetus Gypohierax Gyps Necrosyrtes Neophron Sarcogyps Torgos Trigonoceps
Aviculture
Bird diseases and parasites [ edit ] Threats and conservation [ edit ] Persons influential in the field of birds [ edit ] List of ornithologists