Birds (class Aves or clade Avialae) are feathered, winged, bipedal, endothermic (warm-blooded), egg-laying, vertebrate animals. With around 10,000 living species, they are the most speciose class of tetrapod vertebrates. All present species belong to the subclass Neornithes, and 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. The fossil record indicates that birds emerged within theropod dinosaurs during the Jurassic period, around 150 million years ago. Birds are the only members of the clade originating with the earliest dinosaurs to have survived the Cretaceous-Paleogene extinction event 66 million years ago.
Modern birds are characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. All living species of birds have wings; the most recent species without wings was the moa, which is generally considered to have become extinct in the 16th century. Wings are evolved forelimbs, and most bird species can fly. Flightless Birds include ratites, penguins, and a number of diverse endemic island species. Birds also have unique digestive and respiratory systems that are highly adapted for flight. Some birds, especially corvids and parrots, are among the most intelligent animal species; a number of bird species have been observed manufacturing and using tools, and many social species exhibit cultural transmission of knowledge across generations.
Former Answer by some dummy: "The most diverse group is insects, which belong to the group ARTHROPODA*.*Arthropoda-Largest and most diverse animal phylum, mostly insects."This answer is completely wrong based on the question.Arthropods are invertebrates! They are the most numerous INvertebrates.The most diverse vertebrates are BONY FISH.
Amphibians
Birds are considered one of the most successful vertebrates due to their diversity, adaptability, and ability to inhabit nearly every ecosystem on Earth. Their unique adaptations such as flight, beaks, and diverse diets have allowed them to thrive and evolve into over 10,000 species globally.
They dont
flowering plants (angiosperms). They are diverse in form and habitat, with over 350,000 known species. They have evolved various mechanisms for reproduction and adaptations to different environments, making them one of the most successful and familiar group of plants today.
Successful is a relative term. Some regard Hans Zimmer as the most successful film composer in history. He has worked across a diverse number of genres, is known for impactful scores, and is behind many of the highest grossing box office hits.
I would say that birds are the most successful, but mammals are right up there, too. Another way to look at it . . . mammals survived when most dinosaurs did not. Birds, on the other hand, ARE modern dinosaurs of the class Therosaura. This is like trying to answer the old question, "Which came first, the chicken or the egg?"
The Chordata phylum consists of animals with a notochord, a dorsal nerve cord, pharyngeal slits, and a post-anal tail. This diverse phylum includes vertebrates such as fish, amphibians, reptiles, birds, and mammals, making it one of the most evolutionarily successful groups of organisms.
they are successful coz they can live easily anywhere and they go after food
Some birds are more intelligent then others.
The kingdom with the most members is Animalia, which includes a wide range of organisms such as mammals, birds, reptiles, amphibians, and fish. It is the largest and most diverse kingdom in terms of species diversity.
If you mean the second most diverse animal phylum in terms of number of species, it would probably be the nematodes, which are a type of worm, or chordates, which includes humans. Arthropods are the most species rich animal phylum.