The List of Illinois birds lists every wild bird species seen in the U.S. state of Illinois, based on the list published by the Illinois Ornithological Society.
Only birds that are considered to have established, self-sustaining, wild populations in Illinois are included on this list. This means that birds that are considered probable escapees, although they may have been sighted flying free in Illinois, are not included on this list.
This list is presented in taxonomic order and follows The Check-list of North American Birds (7th ed., 1998), published by the American Ornithologists' Union. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family accounts.
The following codes are used to denote certain categories of species:
Order: Anseriformes Family: Anatidae
The family Anatidae includes the ducks and most duck-like waterfowl, such as geese and swan. These are birds that are modified for an aquatic existence with webbed feet, bills which are flattened to a greater or lesser extent, and feathers that are excellent at shedding water due to special oils. There are 131 species world wide, 61 North American species, and 45 Illinois species.
Order: Galliformes Family: Phasianidae
The Phasianidae is a family of birds which consists of the pheasants and their allies. These are terrestrial species, variable in size but generally plump, with broad relatively short wings. Many species are gamebirds, or have been domesticated as a food source for humans. There are 180 species world wide, 16 North American species, and 6 Illinois species.
Order: Galliformes Family: Odontophoridae
The New World quails are small, plump terrestrial birds only distantly related to the quails of the Old World, but named for their similar appearance and habits. There are 32 species, worldwide, all found only in the Americas, 6 North American species, and 1 Illinois species.
Order: Gaviiformes Family: Gaviidae
Loons are aquatic birds the size of a large duck, to which they are unrelated. Their plumage is largely grey or black, and they have spear-shaped bills. Loons swim well, and fly adequately, but, because their legs are placed towards the rear of the body, are almost hopeless on land. There are five species worldwide, 5 North American species, and 4 Illinois species.
Order: Podicipediformes Family: Podicipedidae
Grebes are small to medium-large sized freshwater diving birds. They have lobed toes, and are excellent swimmers and divers. However, they have their feet placed far back on the body, making them quite ungainly on land. There are 20 species worldwide, 7 North American species, and 6 Illinois species.
Order: Pelecaniformes Family: Sulidae
The sulids comprise the gannets and boobies. Both groups are medium-large coastal seabirds that plunge-dive for fish. There are 10 species worldwide, 5 North American species, and 1 Illinois species.
Order: Pelecaniformes Family: Pelecanidae
Pelicans are very large water birds with a distinctive pouch under the beak. Like other birds in the order Pelecaniformes, they have four webbed toes. There are 8 species world wide, 2 North American species, and 2 Illinois species.
Order: Pelecaniformes Family: Phalacrocoracidae
Cormorants are medium-to-large aquatic birds, usually with mainly dark plumage and areas of coloured skin on the face. The bill is long, thin, and sharply hooked. Their feet are four-toed and webbed, a distinguishing feature among the Pelecaniformes order. There are 36 species worldwide, 6 North American species, and 2 Illinois species.
Order: Pelecaniformes Family: Anhingidae
Darters are cormorant-like water birds with very long necks and long, straight beaks. They often swim with only the neck above water, and are fish-eaters. There are 4 species worldwide, 1 North American species, and 1 Illinois species.
Order: Pelecaniformes Family: Fregatidae
Frigatebirds are large seabirds usually found over tropical oceans. They are large, black or black–and–white, with long wings and deeply-forked tails. The males have inflatable coloured throat pouches. They do not swim or walk, and cannot take off from a flat surface. Having the largest wingspan to body weight ratio of any bird, they are essentially aerial, able to stay aloft for more than a week. There are 5 species worldwide, 3 North American species, and 1 Illinois species.
Order: Ciconiiformes Family: Ardeidae
The family Ardeidae contains the herons, egrets, and bitterns. Herons and Egrets are medium to large-sized wading birds with long necks and legs. Bitterns tend to be shorter necked and more secretive. Unlike other long-necked birds such as storks, ibises and spoonbills, members of Ardeidae fly with their necks retracted. There are 61 species worldwide, 17 North American species, and 12 Illinois species.
Order: Ciconiiformes Family: Threskiornithidae
The family Threskiornithidae includes the ibises and spoonbills. They have long, broad wings. Their bodies tend to be elongated, the neck more so, with rather long legs. The bill is also long, decurved in the case of the ibises, straight and distinctively flattened in the spoonbills. There are 36 species world wide, 5 North American species, and 4 Illinois species.
Order: Ciconiiformes Family: Ciconiidae
Storks are large, heavy, long-legged, long-necked wading birds with long stout bills and wide wingspans. They lack the powder down that other wading birds such as herons, spoonbills and ibises use to clean off fish slime. Storks lack a pharynx and are mute. There are 19 species world wide, 2 North American species, and 1 Illinois species.
Order: Ciconiiformes Family: Cathartidae
The New World vultures are not closely related to Old World vultures, but superficially resemble them because of convergent evolution. Like the Old World vultures, they are scavengers, however, unlike Old World vultures, which find carcasses by sight, New World vultures have a good sense of smell with which they locate carcasses. There are 7 species world wide, all found only in the Americas, 3 North American species, and 2 Illinois species
Order: Falconiformes Family: Accipitridae
The family Accipitridae is a family of birds of prey and include hawks, eagles, kites, harriers and Old World vultures. These birds have very large powerful hooked beaks for tearing flesh from their prey, strong legs, powerful talons, and keen eyesight. There are 233 species world wide, 28 North American species, and 16 Illinois species.
Order: Falconiformes Family: Falconidae
Falconidae is a family of diurnal birds of prey, notably the falcons and caracaras. They differ from hawks, eagles, and kites in that they kill with their beaks instead of their feet. There are 62 species world wide, 10 North American species, and 5 Illinois species.
Order: Gruiformes Family: Rallidae
Rallidae is a large family of small to medium-sized birds which includes the rails, crakes, coots, and gallinules. The most typical family members occupy dense vegetation in damp environments near lakes, swamps, or rivers. In general they are shy and secretive birds, difficult to observe. Most species have strong legs, and have long toes which are well adapted to soft, uneven surfaces. They tend to have short, rounded wings and tend to be weak fliers. There are 143 species world wide, 13 North American species, and 8 Illinois species.
Order: Gruiformes Family: Gruidae
Cranes are large, long-legged and long-necked birds. Unlike the similar-looking but unrelated herons, cranes fly with necks outstretched, not pulled back. Most have elaborate and noisy courting displays or "dances". There are 15 species worldwide, 3 North American species, and 2 Illinois species.
Order: Charadriiformes Family: Charadriidae
The family Charadriidae includes the plovers, dotterels, and lapwings. They are small to medium-sized birds with compact bodies, short, thick necks and long, usually pointed, wings. They are found in open country worldwide, mostly in habitats near water, although there are some exceptions. There are 66 species worldwide, 17 North American species, and 8 Illinois species.
Order: Charadriiformes Family: Recurvirostridae
Recurvirostridae is a family of large wading birds, which includes the avocets and the stilts. The avocets have long legs and long up-curved bills. The stilts have extremely long legs and long, thin, straight bills. There are 9 species world wide, 3 North American species, and 2 Illinois species.
Order: Charadriiformes Family: Scolopacidae
The Scolopacidae are a large diverse family of small to medium sized shorebirds including the Sandpipers, Curlews, Godwits, Shanks, Tattlers, Woodcocks, Snipes, Dowitchers and Phalaropes. The majority of species eat small invertebrates picked out of the mud or soil. Different lengths of legs and bills enable different species to feed in the same habitat, particularly on the coast, without direct competition for food. There are 86 species world wide, 65 North American species, and 34 Illinois species.
Order: Charadriiformes Family: Laridae
Laridae is a family of medium to large seabirds and includes jaegers, skuas, gulls, terns, kittiwakes and skimmers. They are typically grey or white, often with black markings on the head or wings. They have stout, longish bills and webbed feet. There are 108 species world wide, 54 North American species, and 37 Illinois species.
Order: Cuculiformes Family: Alcidae
The family Alcidae includes auks, Murres and Puffins. These are short winged birds that live on the open sea and normally only come ashore for breeding. There are 23 species world wide, 22 North American species, and 2 Illinois species.
Order: Columbiformes Family: Columbidae
Pigeons and doves are stout-bodied birds with short necks and short slender bills with a fleshy cere. There are 308 species world wide, 18 North American species, and 8 Illinois species.
Order: Psittaciformes Family: Psittacidae
Parrots are small to large birds with a characteristic curved beak shape. Their upper mandibles have slight mobility in the joint with the skull and the have a generally erect stance. All parrots are zygodactyl, having the four toes on each foot placed two at the front and two back. There are 330 species world wide, 8 North American species, and 2 Illinois species.
Order: Cuculiformes Family: Cuculidae
The family Cuculidae includes cuckoos, roadrunners and anis. These birds are of variable size with slender bodies, long tails and strong legs. Unlike the cuckoo species of the Old World, North American cuckoos are not brood parasites. There are 138 species world wide, 8 North American species, and 3 Illinois species.
Order: Strigiformes Family: Tytonidae
Barn owls are medium to large sized owls with large heads and characteristic heart-shaped faces. They have long strong legs with powerful talons. There are 16 species world wide, 1 North American species, and 1 Illinois species.
Order: Strigiformes Family: Strigidae
Typical owls are small to large solitary nocturnal birds of prey. They have large forward-facing eyes and ears, a hawk-like beak, and a conspicuous circle of feathers around each eye called a facial disk. There are 195 species world wide, 21 North American species, and 10 Illinois species.
Order: Caprimulgiformes Family: Caprimulgidae
Nightjars are medium-sized nocturnal birds with long wings, short legs and very short bills that usually nest on the ground. Most have small feet, of little use for walking, and long pointed wings. Their soft plumage is cryptically coloured to resemble bark or leaves. There are 86 species world wide, 9 North American species, and 3 Illinois species.
Order: Apodiformes Family: Apodidae
The swifts are small aerial birds, spending the majority of their lives flying. These birds have very short legs and never settle voluntarily on the ground, perching instead only on vertical surfaces. Many swifts have very long, swept-back wings that resemble a crescent or a boomerang. There are 98 species world wide, 9 North American species, and 1 Illinois species.
Order: Apodiformes Family: Trochilidae
Hummingbirds are small birds capable of hovering in mid-air due to the rapid flapping of their wings. They are the only birds that can fly backwards. There are 337 species world wide, 23 North American species, and 4 Illinois species.
Order: Coraciiformes Family: Alcedinidae
Kingfishers are medium sized birds with large heads, long pointed bills, short legs, and stubby tails. There are 94 species world wide, 3 North American species, and 1 Illinois species.
Order: Piciformes Family: Picidae
Woodpeckers are small to medium sized birds with chisel like beaks, short legs, stiff tails and long tongues used for capturing insects. Some species have feet with two toes pointing forward, and two backward, while several species have only three toes. Many woodpeckers have the habit of tapping noisily on tree trunks with their beaks.There are 218 species world wide, 26 North American species, and 10 Illinois species.
Order: Passeriformes Family: Tyrannidae
Tyrant flycatchers are Passerine birds which occur throughout North and South America. They superficially resemble the Old World flycatchers, but are more robust with stronger bills. They do not have the sophisticated vocal capabilities of the songbirds. Most, but not all, are rather plain. As the name implies, most are insectivorous. There are 429 species world wide, all found only in the Americas, 45 North American species, and 18 Illinois species.
Order: Passeriformes Family: Laniidae
Shrikes are passerine birds known for their habit of catching other birds and small animals and impaling the uneaten portions of their bodies on thorns. A typical shrike's beak is hooked, like a bird of prey. There are 31 species world wide 3 North American species, and 2 Illinois species.
Order: Passeriformes Family: Vireonidae
The vireos are a group of small to medium sized passerine birds restricted to the New World. They are typically greenish in colour and resemble wood warblers apart from their heavier bills. There are 52 species world wide, 16 North American species, and 7 Illinois species.
Order: Passeriformes Family: Corvidae
The Corvidae family includes crows, ravens, jays, choughs, magpies, treepies, nutcrackers, and ground jays. Corvids are above average in size for the bird order Passeriformes. Some of the larger species show levels of learned behavior of a high degree. There are 120 species world wide, 21 North American species, and 7 Illinois species.
Order: Passeriformes Family: Alaudidae
Larks are small terrestrial birds with often extravagant songs and display flights. Most larks are fairly dull in appearance. Their food is insects and seeds. There are 91 species world wide, 2 North American species, and 1 Illinois species.
Order: Passeriformes Family: Hirundinidae
The Hirundinidae family is a group of passerines characterised by their adaptation to aerial feeding. Their adaptations include a slender streamlined body, long pointed wings and short bills with a wide gape. The feet are designed for perching rather than walking, and the front toes are partially joined at the base. There are 75 species world wide, 14 North American species, and 8 Illinois species.
Order: Passeriformes Family: Paridae
The Paridae are mainly small stocky woodland species with short stout bills. Some have crests. They are adaptable birds, with a mixed diet including seeds and insects. There are 59 species world wide, 12 North American species and 4 Illinois species.
Order: Passeriformes Family: Sittidae
Nuthatches are small woodland birds. They have the unusual ability to climb down trees head first, unlike other birds which can only go upwards. Nuthatches have big heads, short tails and powerful bills and feet. There are 24 species world wide, 4 North American species, and 3 Illinois species.
Order: Passeriformes Family: Certhiidae
Treecreepers are small woodland birds, brown above and white below. They have thin pointed down-curved bills, which they use to extricate insects from bark. They have stiff tail feathers, like woodpeckers, which they use to support themselves on vertical trees. There are 6 species world wide, 1 North American species , and 1 Illinois species.
Order: Passeriformes Family: Troglodytidae
Wrens are small and inconspicuous birds, except for their loud songs. They have short wings and a thin down-turned bill. Several species often hold their tails upright. All are insectivorous. There are 79 species world wide, 9 North American species, and 7 Illinois species.
Order: Passeriformes Family: Regulidae
The kinglets are a small family of birds which resemble the titmice. They are very small insectivorous birds in the genus Regulus. The adults have coloured crowns, giving rise to their names. There are 5 species world wide, 2 North American species, and 2 Illinois species.
Order: Passeriformes Family: Sylviidae
The family Sylviidae is a group of small insectivorous passerine birds. The Sylviidae mainly occur as breeding species, as the common name implies, in Europe, Asia and, to a lesser extent Africa. Most are of generally undistinguished appearance, but many have distinctive songs. There are about 300 species world wide, 12 North American Species and 1 Illinois species.
Order: Passeriformes Family: Turdidae
The Thrushes are a group of passerine birds that occur mainly but not exclusively in the Old World. They are plump, soft plumaged, small to medium sized insectivores or sometimes omnivores, often feeding on the ground. Many have attractive songs. There are 335 species world wide, 28 North American species, and 11 Illinois species.
Order: Passeriformes Family: Mimidae
The Mimids are a family of passerine birds that includes thrashers, mockingbirds, tremblers, and the New World catbirds. These birds are notable for their vocalization, especially their remarkable ability to mimic a wide variety of birds and other sounds heard outdoors. The species tend towards dull grays and browns in their appearance. There are 35 species world wide, 13 North American species, and 5 Illinois species.
Order: Passeriformes Family: Sturnidae
Starlings are small to medium-sized passerine birds. They are medium-sized passerines with strong feet. Their flight is strong and direct, and they are very gregarious. Their preferred habitat is fairly open country, and they eat insects and fruit. Plumage is typically dark with a metallic sheen. There are 125 species world wide, 3 North American species, and 1 Illinois species.
Order: Passeriformes Family: Motacillidae
The Motacillidae are a family of small passerine birds with medium to long tails. They include the wagtails, longclaws and pipits. They are slender, ground feeding insectivores of open country. There are 54 species world wide, 11 North American species, and 2 Illinois species.
Order: Passeriformes Family: Bombycillidae
The waxwings are a group of passerine birds characterised by soft silky plumage and unique red tips to some of the wing feathers. In the Bohemian and Cedar Waxwings, these tips look like sealing wax, and give the group its name. These are arboreal birds of northern forests. They live on insects in summer and berries in winter. There are three species world wide, 2 North American species, and 2 Illinois species.
Order: Passeriformes Family: Parulidae
The Wood Warblers are a group of small often colourful passerine birds restricted to the New World. Most are arboreal, but some like the Ovenbird and the two waterthrushes, are more terrestrial. Most members of this family are insectivores. There are 119 species world wide, 57 North American species, and 43 Illinois species.
Order: Passeriformes Family: Thraupidae
The tanagers are a large group of small to medium-sized passerine birds restricted to the New World, mainly in the tropics. Many species are brightly coloured. They are seedeaters, but their preference tends towards fruit and nectar. Most have short, rounded wings. There are 256 species world wide, 6 North American species, and 4 Illinois species.
Order: Passeriformes Family: Emberizidae
The Emberizidae are a large family of passerine birds. They are seed-eating birds with a distinctively shaped bill. In Europe, most species are named as buntings. In North America, most of the species in this family are known as Sparrows, but these birds are not closely related to the Old World sparrows which are in the family Passeridae. Many emberizid species have distinctive head patterns. There are 275 species world wide, 60 North American species, and 32 Illinois species.
Order: Passeriformes Family: Cardinalidae
The Cardinals are a family of passerine birds that are robust, seed-eating birds, with strong bills. They are typically associated with open woodland. The sexes usually have distinct plumages. There are 43 species world wide, 13 North American species and 8 Illinois species.
Order: Passeriformes Family: Icteridae
The Icterids are a group of small to medium, often colourful passerine birds restricted to the New World and include the grackles, New World blackbirds, and New World orioles. Most species have black as a predominant plumage colour, often enlivened by yellow, orange or red. There are 98 species world wide, 25 North American species, and 13 Illinois species.
Order: Passeriformes Family: Fringillidae
Finches are seed-eating passerine birds, that are small to moderately large and have a strong beak, usually conical and in some species very large. All have 12 tail feathers and 9 primaries. These birds have a bouncing flight with alternating bouts of flapping and gliding on closed wings, and most sing well. There are 137 species world wide, 23 North American species, and 11 Illinois species.
Order: Passeriformes Family: Passeridae
Old World sparrows are small passerine birds. In general, sparrows tend to be small plump brownish or greyish birds with short tails and short powerful beaks. Sparrows are seed-eaters, and they also consume small insects. There are 35 species world wide, 2 North American species, and 2 Illinois species.
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