This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of The Clements Checklist of Birds of the World, 2022 edition.
A bone possibly belonging to Mullerornis has been radiocarbon dated to about 1260 BP, suggesting that the animal was still extant at the end of the first millennium.
These birds are adapted to an aquatic existence with webbed feet, flattened bills, and feathers that are excellent at shedding water due to an oily coating.
Order: Phoenicopteriformes Family: Phoenicopteridae Flamingos are gregarious wading birds, usually 3 to 5 feet (0.9 to 1.5 m) tall, found in both the Western and Eastern Hemispheres.
Their oddly shaped beaks are specially adapted to separate mud and silt from the food they consume and, uniquely, are used upside-down.
Order: Pterocliformes Family: Pteroclidae Sandgrouse have small, pigeon like heads and necks, but sturdy compact bodies.
They are small to medium-sized birds with compact bodies, short, thick necks and long, usually pointed, wings.
Order: Charadriiformes Family: Rostratulidae Painted-snipes are short-legged, long-billed birds similar in shape to the true snipes, but more brightly coloured.
They are identifiable by their huge feet and claws which enable them to walk on floating vegetation in the shallow lakes that are their preferred habitat.
Different lengths of legs and bills enable multiple species to feed in the same habitat, particularly on the coast, without direct competition for food.
Order: Charadriiformes Family: Turnicidae The buttonquails are small, drab, running birds which resemble the true quails.
It resembles a plover but with very long grey legs and a strong heavy black bill similar to a tern.
It has black-and-white plumage, a long neck, partially webbed feet and a bill designed for eating crabs.
Terns are a group of generally medium to large seabirds typically with grey or white plumage, often with black markings on the head.
Order: Phaethontiformes Family: Phaethontidae Tropicbirds are slender white birds of tropical oceans, with exceptionally long central tail feathers.
[25] Order: Sphenisciformes Family: Spheniscidae The penguins are a group of aquatic, flightless birds living almost exclusively in the Southern Hemisphere.
Most penguins feed on krill, fish, squid and other forms of sea life caught while swimming underwater.
Order: Procellariiformes Family: Procellariidae The procellariids are the main group of medium-sized "true petrels", characterised by united nostrils with medium septum and a long outer functional primary.
Order: Ciconiiformes Family: Ciconiidae Storks are large, long-legged, long-necked, wading birds with long, stout bills.
Order: Suliformes Family: Anhingidae Anhingas or darters are often called "snake-birds" because they have long thin necks, which gives a snake-like appearance when they swim with their bodies submerged.
Order: Strigiformes Family: Strigidae The typical owls are small to large solitary nocturnal birds of prey.
Order: Bucerotiformes Family: Upupidae Hoopoes have black, white and orangey-pink colouring with a large erectile crest on their head.
Order: Coraciiformes Family: Alcedinidae Kingfishers are medium-sized birds with large heads, long, pointed bills, short legs and stubby tails.
Order: Coraciiformes Family: Coraciidae Rollers resemble crows in size and build, but are more closely related to the kingfishers and bee-eaters.
Old World parrots are found from Africa east across south and southeast Asia and Oceania to Australia and New Zealand.
Order: Passeriformes Family: Alaudidae Larks are small terrestrial birds with often extravagant songs and display flights.
They are generally very small birds of drab brown or grey appearance found in open country such as grassland or scrub.
Some are colourful with yellow, red, or orange vents, cheeks, throats, or supercilia, but most are drab, with uniform olive-brown to black plumage.
Order: Passeriformes Family: Zosteropidae The white-eyes are small birds of rather drab appearance, the plumage above being typically greenish-olive, but some species have a white or bright yellow throat, breast, or lower parts, and several have buff flanks.
Order: Passeriformes Family: Estrildidae The estrildid finches are small passerine birds of the Old World tropics and Australasia.