The answer to this question is the word bird

small bird; adults talking to children sometimes use these words to refer to small birds

adult male bird

adult female bird

a bird that has built (or is building) a nest

any bird associated with night: owl; nightingale; nighthawk; etc

any bird that migrates seasonally

most primitive avian type known; extinct bird of the Triassic having bird-like jaw and hollow limbs and breastbone with dinosaur-like tail and hind limbs

extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds

sparrow-sized fossil bird of the Jurassic period to the Cretaceous period having a keeled breastbone and vestigial tail; found in China; considered possibly the second most primitive of all birds

sparrow-sized fossil bird of the Cretaceous period having a vestigial tail; found in Spain; considered possibly the third most primitive of all birds

extinct primitive toothed bird with a long feathered tail and three free clawed digits on each wing

flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds

birds having keeled breastbones for attachment of flight muscles

perching birds mostly small and living near the ground with feet having 4 toes arranged to allow for gripping the perch; most are songbirds; hatchlings are helpless

chiefly arboreal birds especially of the order Coraciiformes

any of numerous carnivorous birds that hunt and kill other animals

heavy-bodied largely ground-feeding domestic or game birds

usually brightly colored zygodactyl tropical birds with short hooked beaks and the ability to mimic sounds

birds having zygodactyl feet (except for the touracos)

chiefly short-legged arboreal nonpasserine birds that nest in holes

nonpasserine bird having long wings and weak feet; spends much of its time in flight

long-winged nonpasserine birds

any of numerous nonpasserine insectivorous climbing birds usually having strong bills for boring wood

forest bird of warm regions of the New World having brilliant lustrous plumage and long tails

wading and swimming and diving birds of either fresh or salt water

a bird that twitters

a cock bred and trained for fighting

any bird that cries at night

fast-running African flightless bird with two-toed feet; largest living bird

large black flightless bird of Australia and New Guinea having a horny head crest

large Australian flightless bird similar to the ostrich but smaller

nocturnal flightless bird of New Zealand having a long neck and stout legs; only surviving representative of the order Apterygiformes

larger of two tall fast-running flightless birds similar to ostriches but three-toed; found from Brazil to Patagonia

smaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Strait of Magellan

huge (to 9 ft.) extinct flightless bird of Madagascar

extinct flightless bird of New Zealand

passerine bird having specialized vocal apparatus

any of several small dull-colored singing birds feeding on seeds or insects

Australian bird that resembles a pheasant; the courting male displays long tail feathers in a lyre shape

small fast-running Australian bird resembling a wren and frequenting brush or scrub

small birds of the Old World tropics having bright plumage and short wide bills

a passerine bird of the suborder Tyranni

any of several small active brown birds of the northern hemisphere with short upright tails; they feed on insects

in some classifications an alternative name for the Falconiformes

diurnal bird of prey typically having short rounded wings and a long tail

any of various large keen-sighted diurnal birds of prey noted for their broad wings and strong soaring flight

any of various large diurnal birds of prey having naked heads and weak claws and feeding chiefly on carrion

large long-legged African bird of prey that feeds on reptiles

nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes

a domesticated gallinaceous bird thought to be descended from the red jungle fowl

small Asiatic wild bird; believed to be ancestral to domestic fowl

wild turkey of Central America and northern South America

any of several large turkey-like game birds of the family Cracidae; native to jungles of tropical America; resembling the curassows and valued as food

large crested arboreal game bird of warm parts of the Americas having long legs and tails; highly esteemed as game and food

slender arboreal guan resembling a wild turkey; native to Central America and Mexico; highly regarded as game birds

large-footed short-winged birds of Australasia; build mounds of decaying vegetation to incubate eggs

crested ill-smelling South American bird whose young have claws on the first and second digits of the wings

a cosmopolitan order of land birds having small heads and short legs with four unwebbed toes

an archaic term for a parrot

a tame parrot

commonly domesticated grey parrot with red-and-black tail and white face; native to equatorial Africa

mainly green tropical American parrots

long-tailed brilliantly colored parrot of Central America and South America; among the largest and showiest of parrots

large brownish-green New Zealand parrot

white or light-colored crested parrot of the Australian region; often kept as cage birds

small grey Australian parrot with a yellow crested head

small African parrot noted for showing affection for their mates

small brightly colored Australasian parrots having a brush-tipped tongue for feeding on nectar and soft fruits

any of numerous small slender long-tailed parrots

any of numerous European and North American birds having pointed wings and a long tail

large brightly crested bird of Africa

Old World bird that tumbles or rolls in flight; related to kingfishers

nonpasserine large-headed bird with a short tail and long sharp bill; usually crested and bright-colored; feed mostly on fish

colorful chiefly tropical Old World bird having a strong graceful flight; feeds on especially bees

bird of tropical Africa and Asia having a very large bill surmounted by a bony protuberance; related to kingfishers

any of several crested Old World birds with a slender downward-curved bill

tropical African bird having metallic blackish plumage but no crest

tropical American bird resembling a blue jay and having greenish and bluish plumage

tiny insectivorous West Indian bird having red-and-green plumage and a long straight bill

a small bird that resembles a swallow and is noted for its rapid flight

birds of southeast Asia and East Indies differing from true swifts in having upright crests and nesting in trees

tiny American bird having brilliant iridescent plumage and long slender bills; wings are specialized for vibrating flight

mainly crepuscular or nocturnal nonpasserine birds with mottled greyish-brown plumage and large eyes; feed on insects

insectivorous bird of Australia and southeastern Asia having a wide frog-like mouth

nocturnal fruit-eating bird of South America that has fatty young yielding an oil that is used instead of butter

bird with strong claws and a stiff tail adapted for climbing and a hard chisel-like bill for boring into wood for insects

small brightly colored stout-billed tropical bird having short weak wings

brownish tropical American bird having a large head with fluffed out feathers

small bird of tropical Africa and Asia; feeds on beeswax and honey and larvae

tropical American insectivorous bird having a long sharp bill and iridescent green or bronze plumage

brilliantly colored arboreal fruit-eating bird of tropical America having a very large thin-walled beak

large trogon of Central America and South America having golden-green and scarlet plumage

freshwater aquatic bird

stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult

any of many long-legged birds that wade in water in search of food

any of various small aquatic birds of the genus Gallinula distinguished from rails by a frontal shield and a resemblance to domestic hens

a bird that frequents coastal waters and the open ocean: gulls; pelicans; gannets; cormorants; albatrosses; petrels; etc.

any bird (as grouse or pheasant) that is hunted for sport