Duck belongs to class Aves
Why
Answers
BECAUSE IT IS WARM BLOODED AND HAS FEATHERS ALL OVER ITS BODY .
Answer:
Birds are a group of warm-blooded vertebrates constituting the class Aves, 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. Birds live worldwide and range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which evolved from forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming.Scientific classificatione
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Sauropsida
Clade:
Avemetatarsalia
Clade:
Ornithurae
Class:
Aves
Linnaeus, 1758[2]
Extant orders and temporal range
See orders
* Infraclass Palaeognathae
Superorder Struthionimorphae
Struthioniformes (Ostrichs) – 58?–0 Mya, Late Paleocene?–present
Superorder Notopalaeognathae
Rheiformes (Rheas) – 56–0 Mya, Late Paleocene–present
Tinamiformes (Tinamous) – 10–0 Mya, Middle Miocene–present
Casuariiformes (Casowaries and Emus) – 58.7–0 Mya, Late Paleocene–present
Apterygiformes (Kiwis) – 23.03–0 Mya, Early Miocene–present
Infraclass Neognathae
Superorder Galloanserae
Galliformes (Gamebirds) – 45–0 Mya, Middle Eocene–present
Anseriformes (Waterfowl) – 71–0 Mya, Late Cretaceous (Maastrichtian)–present
Superorder Neoaves
Phoenicopteriformes (Flamingos) – 50–0 Mya, Early Eocene–present
Podicipediformes (Grebes) – 25–0 Mya, Late Oligocene–present
Columbiformes (Pigeons and doves) – 23.03–0 Mya, Early Miocene–present
Mesitornithiformes (Mesites) – No fossil records
Pterocliformes (Sandgrouse) – 33.9–0 Mya, Late Oligocene–present
Apodiformes (swifts, treeswifts and hummingbirds) – 52–0 Mya, Early Eocene–present
Caprimulgiformes (Nightjars, nighthawks, potoos, oilbirds, frogmouths and owlet-nightjars) – 59.2–0 Mya, Middle Paleocene–present
Cuculiformes (Cuckoos, anis, etc) – 34–0 Mya, Late Miocene–present
Otidiformes (Bustards, floricans, etc) – 13–0 Mya, Middle Miocene–present
Musophagiformes (Turacos and go-away-birds) – 24–0 Mya, Late Oligocene–present
Opisthocomiformes (Hoatzin) – 33.9–0 Mya, Late Eocene–present
Gruiformes (Cranes, crakes, rails, wood-rails, flufftails, gallinules, limpkins, trumpeters, finfoots and sungrebes) – 66–0 Mya, Late Cretaceous (Maastrichtian)–present
Charadriiformes (Plovers, crab plovers, lapwings, seagulls, puffins, auks, sandipipers, buttonquails, stilts, avocets, ibisbills, woodcocks, skuas, etc) – 75–0 Mya, Late Cretaceous (Campanian)–present
Gaviiformes (Loons) – 70–0 Mya, Late Cretaceous (Maastrichtian)–present
Procellariiformes (petrels, storm petrels, albatrosses and diving petrels) – 33.9–0 Mya, Early Oligocene–present
Sphenisciformes (penguins) – 62–0 Mya, Early Paleocene–present
Ciconiiformes (storks, openbills and jabirus) – 30–0 Mya, Early Oligocene–present
Suliformes (boobies, gannets, frigatebirds, cormorants, shags and anhingas) – 90–0 Mya, Late Cretaceous (Turonian)–present
Pelecaniformes (pelicans, ibises, shoebills, egrets, herons, etc) – 66–0 Mya, Late Cretaceous (Maastrichtian)–present
Eurypygiformes (sunbitterns and kagu) – 56–0 Mya, Late Paleocene–present
Phaethontiformes (tropicbirds) – 58.7–0 Mya, Late Paleocene–present
Cathartiformes (New World vultures) – 41–0 Mya, Middle Eocene–present
Accipitriformes (eagles, Old World vultures, secretary-birds, hawks, harriers, etc) – 47–0 Mya, Late Eocene–present
Strigiformes (owls) – 30–0 Mya, Early Oligocene–present
Coliiformes (mousebirds) – ~65–0 Mya, Early Paleocene–present
Leptosomiformes (cuckoorollers) – No fossil record
Trogoniformes (trogons and quetzals) – 49–0 Mya, Early Eocene–present
Bucerotiformes (hornbills, hoopoes and wood-hoopoes) – ~40–0 Mya, Middle Eocene–present
Coraciiformes (rollers, bee eaters, todys, kingfishers, etc) – 41.2–0 Mya, Middle Eocene–present
Piciformes (woodpeckers, flickers, toucans, aracaris, motmots, etc) – 56–0 Mya, Early Eocene–present
Cariamiformes (seriema) – 66–0 Mya, Late Cretaceous (Maastrichtian)–present
Falconiformes (falcons and caracaras) – 50–0 Mya, Early Eocene–present
Psittaciformes (parrots and cockatoos) – 50–0 Mya, Early Eocene–present
Passeriformes (passerines) – 52.5–0 Mya, Early Eocene–present
mark me as brainlist
hope it helps you all
thank you