This list of birds of Ontario includes all the bird species recorded in the Canadian province of Ontario as determined by the Ontario Bird Records Committee (OBRC). As of July 2021 there were 508 species on this list, 291 of which are known to breed in the province.[1] Ontario has a considerable variety of bird species. One of the factors in this diversity is the size and range of environments in Ontario. Another is the Great Lakes; many birds use the shores as a stopping point during migration.[2]
The OBRC Checklist divides the province into the Lowlands, Central, and South review zones and requests documentation of sightings of birds which are rare or accidental in one, two, or all of the zones. Of the 508 species on the list, 177 are noted as rare anywhere in the province and another 108 are rare in one or two of the zones. Eight species have been introduced to North America. One species has been extirpated, one is extinct, and another might be.
This list is presented in the taxonomic sequence of the Check-list of North and Middle American Birds, 7th edition through the 62nd Supplement, published by the American Ornithological Society (AOS).[3] Common and scientific names are also those of the Check-list, except that Canadian English spellings are used and the common names of families are from the Clements taxonomy because the AOS list does not include them.
The following codes are used to categorise some species:
(A) Accidental – a species that only occurs in Ontario as a rare vagrant
(B) Breeding – a species that currently breeds or has bred in Ontario
(E) Extinct – a recent species that no longer exists
(Ex) Extirpated – a species that no longer occurs in Ontario, but populations still exist elsewhere
(I) Introduced – established solely as result of direct or indirect human intervention; synonymous with non-native and non-indigenous
The family Anatidae includes ducks and most duck-like waterfowl, such as geese and swans. These birds are adapted to 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.
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.
The Phasianidae is a family of birds which consists of pheasants, partridges, grouse, turkeys, 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.
Grebes small to medium-large 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.
Nightjars are medium-sized ground-nesting nocturnal birds with long wings, short legs, and very short bills. Most have small feet, of little use for walking, and long pointed wings. Their soft plumage is camouflaged to resemble bark or leaves.
Swifts are small birds which spend 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 long swept-back wings which resemble a crescent or boomerang.
Rallidae is a large family of small to medium-sized birds which includes the rails, crakes, gallinules, and coots. The most typical family members occupy dense vegetation in damp environments near lakes, swamps, or rivers. In general, they are shy and secretive birds, making them difficult to observe. Most species have strong legs and long toes which are well adapted to soft uneven surfaces. They tend to have short, rounded wings and to be weak fliers.
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".
Recurvirostridae is a family of large wading birds which includes the avocets and stilts. The avocets have long legs and long up-curved bills. The stilts have extremely long legs and long, thin, straight bills.
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.
Scolopacidae is 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 these species eat small invertebrates picked out of the mud or soil. Variation in length of legs and bills enables multiple species to feed in the same habitat, particularly on the coast, without direct competition for food.
The family Stercorariidae are large birds, typically with grey or brown plumage, often with white markings on the wings. They have longish bills with hooked tips and webbed feet with sharp claws. They look like large dark gulls, but have a fleshy cere above the upper mandible. They are strong, acrobatic fliers.
Alcids are superficially similar to penguins due to their black-and-white colours, their upright posture, and some of their habits, however, they are only distantly related to the penguins and are able to fly. Auks live on the open sea, only deliberately coming ashore to nest.
Laridae is a family of medium to large seabirds and includes 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.
Loons, known as divers in Europe, 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 helpless on land.
The albatrosses are amongst the largest of flying birds, and the great albatrosses from the genus Diomedea have the largest wingspans of any extant birds.
The storm-petrels are the smallest seabirds, relatives of the petrels, feeding on planktonic crustaceans and small fish picked from the surface, typically while hovering. The flight is fluttering and sometimes bat-like. Until 2018, this family's three species were included with the other storm-petrels in family Hydrobatidae.
Though the members of this family are similar in many respects to the southern storm-petrels, including their general appearance and habits, there are enough genetic differences to warrant their placement in a separate family.
The procellariids are the main group of medium-sized "true petrels", characterised by united nostrils with medium septum and a long outer functional primary.
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.
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 coloured inflatable 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.
Anhingas are cormorant-like water birds with very long necks and long, straight beaks. They are fish eaters which often swim with only their neck above the water.
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.
Pelicans are very large water birds with a distinctive pouch under their beak. Like other birds in the order Pelecaniformes, they have four webbed toes.
The family Ardeidae contains the bitterns, herons, and egrets. Herons and egrets are medium to large wading birds with long necks and legs. Bitterns tend to be shorter necked and warier. Unlike other long-necked birds such as storks, ibises, and spoonbills, members of this family fly with their necks retracted.
Threskiornithidae is a family of large terrestrial and wading birds which comprises the ibises and spoonbills. Its members have long, broad wings with 11 primary and about 20 secondary flight feathers. They are strong fliers and, despite their size and weight, very capable soarers.
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.
Pandionidae is a family of fish-eating birds of prey possessing a very large, powerful hooked beak for tearing flesh from their prey, strong legs, powerful talons, and keen eyesight. The family is monotypic.
The Accipitridae is a family of birds of prey, which includes hawks, eagles, kites, harriers, and Old World vultures. These birds mostly have powerful hooked beaks for tearing flesh from their prey, strong legs, powerful talons, and keen eyesight.
The 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.
Woodpeckers, sapsuckers, and flickers 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.
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 talons.
Tyrant flycatchers are Passerine birds which occur throughout North and South America. They superficially resemble the Old World flycatchers, but are more robust and have stronger bills. They do not have the sophisticated vocal capabilities of the songbirds. Most are rather plain. As the name implies, most are insectivorous.
The vireos are a group of small to medium-sized passerine birds. They are typically greenish in colour and resemble wood warblers apart from their heavier bills.
Shrikes are passerine birds known for the habit of catching other birds and small animals and impaling the uneaten portions of their bodies on thorns. A shrike's beak is hooked, like that of a typical bird of prey.
Chickadees and titmice 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.
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.
The family Hirundinidae is a group of passerines characterised by their adaptation to aerial feeding. The family includes swallows and martins. These adaptations include a slender streamlined body, long pointed wings, and short bills with a wide gape. The feet are adapted to perching rather than walking, and the front toes are partially joined at the base.
Leaf warblers are a family of small insectivorous birds found mostly in Eurasia and ranging into Wallacea and Africa. The species are of various sizes, often green-plumaged above and yellow below, or more subdued with grayish-green to grayish-brown colors.
The kinglets are a small family of birds which resemble the titmice. They are very small insectivorous birds. The adults have coloured crowns, giving rise to their name.
The waxwings are a group of birds with 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.
The silky-flycatchers are a small family of passerine birds which occur mainly in Central America. They are related to waxwings and most species have small crests.
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.
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.
Wrens are small and inconspicuous birds, except for their loud songs. They have short wings and thin down-turned bills. Several species often hold their tails upright. All are insectivorous.
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 greys and browns in their appearance.
Starlings are small to medium-sized passerine birds. Their flight is strong and direct and they are very gregarious. Their preferred habitat is fairly open country. They eat insects and fruit. Plumage is typically dark with a metallic sheen.
The thrushes are a group of passerine birds that occur mainly 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.
The Old World flycatchers are a large family of small passerine birds. These are mainly small arboreal insectivores, many of which, as the name implies, take their prey on the wing.
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, but they also consume small insects.
Motacillidae is 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.
Finches are small to moderately large seed-eating passerine birds with a strong beak, usually conical and in some species very large. All have 12 tail feathers and nine primaries flight feathers. Finches have a bouncing flight, alternating bouts of flapping with gliding on closed wings, and most sing well.
The Calcariidae are a group of passerine birds that were traditionally grouped with the New World sparrows, but differ in a number of respects and are usually found in open grassy areas.
Until 2017, these species were considered part of the family Emberizidae. Most of the species are known as sparrows, but these birds are not closely related to the Old World sparrows which are in the family Passeridae. Many of these have distinctive head patterns.
This species was historically placed in the wood-warblers (Parulidae) but nonetheless most authorities were unsure if it belonged there. It was placed in its own family in 2017.
The icterids are a group of small to medium-sized, often colourful passerine birds restricted to the New World and include the blackbirds, meadowlarks, cowbirds, grackles, and New World orioles. Most species have black as a predominant plumage colour, often enlivened by yellow, orange, or red.
The wood-warblers are a group of small often colourful passerine birds restricted to the New World. Most are arboreal, but some are more terrestrial. Most members of this family are insectivores.
Cardinals are a family of robust, seed-eating birds with strong bills. They are typically associated with open woodland. The sexes usually have distinct plumages.
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