List of birds of Guatemala

The resplendent quetzal is the national bird of Guatemala.

This is a list of the bird species recorded in Guatemala. The avifauna of Guatemala include a total of 763 species as of October 2015.[1] One species (now extinct) was endemic andt three non-endemic species are extirpated or extinct. Four have been introduced by humans and 46 are rare or accidental.

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, 2016 edition.[2]

The following tags have been used to highlight several categories. The commonly occurring native species and migrants do not fall into any of these categories.


Tinamous

Great tinamou

Order: Tinamiformes   Family: Tinamidae

The tinamous are one of the most ancient groups of bird. Although they look similar to other ground-dwelling birds like quail and grouse, they have no close relatives and are classified as a single family, Tinamidae, within their own order, the Tinamiformes. They are distantly related to the ratites (order Struthioniformes), that includes the rheas, emus, and kiwis.

Ducks, geese, and waterfowl

Black-bellied whistling-duck
Blue-winged teal
Ruddy duck

Order: Anseriformes   Family: Anatidae

The family Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans. 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.

Guans, chachalacas, and curassows

Great curassow

Order: Galliformes   Family: Cracidae

The Cracidae are large birds, similar in general appearance to turkeys. The guans and curassows live in trees, but the smaller chachalacas are found in more open scrubby habitats. They are generally dull-plumaged, but the curassows and some guans have colorful facial ornaments.

New World quail

Northern bobwhite

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.

Pheasants, grouse, and allies

Ocellated turkey

Order: Galliformes   Family: Phasianidae

Turkeys are similar to large pheasants but have a distinctive fleshy wattle that hangs from the beak, called a snood.

Grebes

Pied-billed grebe

Order: Podicipediformes   Family: Podicipedidae

Grebes are 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.

Shearwaters and petrels

Sooty shearwater

Order: Procellariiformes   Family: Procellariidae

The procellariids are the main group of medium-sized "true petrels", characterized by united nostrils with medium septum and a long outer functional primary.

Storm-petrels

Wilson's storm-petrel

Order: Procellariiformes   Family: Hydrobatidae

The storm-petrels are relatives of the petrels and are the smallest seabirds. They feed on planktonic crustaceans and small fish picked from the surface, typically while hovering. The flight is fluttering and sometimes bat-like.

Tropicbirds

Red-billed tropicbird

Order: Phaethontiformes   Family: Phaethontidae

Tropicbirds are slender white birds of tropical oceans with exceptionally long central tail feathers. Their heads and long wings have black markings.

Storks

Jabiru

Order: Ciconiiformes   Family: Ciconiidae

Storks are large, long-legged, long-necked wading birds with long, stout bills. Storks are mute, but bill-clattering is an important mode of communication at the nest. Their nests can be large and may be reused for many years. Many species are migratory.

Frigatebirds

Magnificent frigatebird

Order: Suliformes   Family: Fregatidae

Frigatebirds are large seabirds usually found over tropical oceans. They are large, black-and-white, or completely black, with long wings and deeply forked tails. The males have colored 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.

Boobies and gannets

Blue-footed booby

Order: Suliformes   Family: Sulidae

The sulids comprise the gannets and boobies. Both groups are medium to large coastal seabirds that plunge-dive for fish.

Cormorants and shags

Double-crested cormorant

Order: Suliformes   Family: Phalacrocoracidae

Phalacrocoracidae is a family of medium to large coastal, fish-eating seabirds that includes cormorants and shags. Plumage coloration varies, with the majority having mainly dark plumage, some species being black-and-white, and a few being colorful.

Anhingas

Anhinga

Order: Suliformes   Family: Anhingidae

Anhingas are often called "snake-birds" because of their long thin neck, which gives a snake-like appearance when they swim with their bodies submerged. The males have black and dark-brown plumage, an erectile crest on the nape, and a larger bill than the female. The females have much paler plumage especially on the neck and underparts. The Anhingas have completely webbed feet and their legs are short and set far back on the body. Their plumage is somewhat permeable, like that of cormorants, and they spread their wings to dry after diving.

Pelicans

Brown pelican

Order: Pelecaniformes   Family: Pelecanidae

Pelicans are large water birds with a distinctive pouch under their beak. As with other members of the order Pelecaniformes, they have webbed feet with four toes.

Herons, egrets, and bitterns

Snowy egret
Green heron

Order: Pelecaniformes   Family: Ardeidae

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 more wary. Members of Ardeidae fly with their necks retracted, unlike other long-necked birds such as storks, ibises and spoonbills.

Ibises and spoonbills

Roseate spoonbill

Order: Pelecaniformes   Family: Threskiornithidae

Threskiornithidae is a family of large terrestrial and wading birds which includes the ibises and spoonbills. They have long, broad wings with 11 primary and about 20 secondary feathers. They are strong fliers and despite their size and weight, very capable soarers.

New World vultures

Turkey vulture

Order: Accipitriformes   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 carrion.

Osprey

Osprey

Order: Accipitriformes   Family: Pandionidae

The Pandionidae family contains only one species, the osprey. The osprey is a medium-large raptor which is a specialist fish-eater with a worldwide distribution.

Hawks, eagles, and kites

Harpy eagle
Ornate hawk-eagle
Crane hawk
Swainson's hawk

Order: Accipitriformes   Family: Accipitridae

Accipitridae is a family of birds of prey, which includes hawks, eagles, kites, harriers, and Old World vultures. These birds have powerful hooked beaks for tearing flesh from their prey, strong legs, powerful talons, and keen eyesight.

Sunbittern

Sunbittern

Order: Eurypygiformes   Family: Eurypygidae

The sunbittern is a bittern-like bird of tropical regions of the Americas and the sole member of the family Eurypygidae (sometimes spelled Eurypigidae) and genus Eurypyga.

Rails, gallinules, and coots

Rufous-naped wood-rail
Sora
Purple gallinule

Order: Gruiformes   Family: Rallidae

Rallidae is a large family of small to medium-sized birds which includes the rails, crakes, coots, and gallinules. Typically they inhabit 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.

Finfoots

Sungrebe

Order: Gruiformes   Family: Heliornithidae

Heliornithidae is a small family of tropical birds with webbed lobes on their feet similar to those of grebes and coots.

Limpkin

Limpkin

Order: Gruiformes   Family: Aramidae

The limpkin resembles a large rail. It has drab-brown plumage and a grayer head and neck.

Thick-knees

Double-striped thick-knee

Order: Charadriiformes   Family: Burhinidae

The thick-knees are a group of largely tropical waders in the family Burhinidae. They are found worldwide within the tropical zone, with some species also breeding in temperate Europe and Australia. They are medium to large waders with strong black or yellow-black bills, large yellow eyes, and cryptic plumage. Despite being classed as waders, most species have a preference for arid or semi-arid habitats.

Stilts and avocets

American avocet

Order: Charadriiformes   Family: Recurvirostridae

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.

Oystercatchers

American oystercatcher

Order: Charadriiformes   Family: Haematopodidae

The oystercatchers are large and noisy plover-like birds, with strong bills used for smashing or prising open molluscs.

Plovers and lapwings

Killdeer

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.

Jacanas

Northern jacana

Order: Charadriiformes   Family: Jacanidae

The jacanas are a group of waders in the family Jacanidae. They are found throughout the tropics. 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.

Sandpipers and allies

Red knot
Long-billed dowitcher
Wilson's snipe
Red-necked phalarope

Order: Charadriiformes   Family: Scolopacidae

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.

Skuas and jaegers

Pomarine jaeger

Order: Charadriiformes   Family: Stercorariidae

The family Stercorariidae are, in general, medium to large birds, typically with gray or brown plumage, often with white markings on the wings. They nest on the ground in temperate and arctic regions and are long-distance migrants.

Gulls, terns, and skimmers

Heermann's gull
Ring-billed gull

Order: Charadriiformes   Family: Laridae

Laridae is a family of medium to large seabirds and includes gulls, kittiwakes, terns, and skimmers. Gulls are typically gray or white, often with black markings on the head or wings. They have longish bills and webbed feet. Terns are a group of generally medium to large seabirds typically with grey or white plumage, often with black markings on the head. Most terns hunt fish by diving but some pick insects off the surface of fresh water. Terns are generally long-lived birds, with several species known to live in excess of 30 years. Skimmers are a small family of tropical tern-like birds. They have an elongated lower mandible which they use to feed by flying low over the water surface and skimming the water for small fish.

Pigeons and doves

Band-tailed pigeon
Mourning dove

Order: Columbiformes   Family: Columbidae

Pigeons and doves are stout-bodied birds with short necks and short slender bills with a fleshy cere.

Cuckoos

Squirrel cuckoo
Mangrove cuckoo

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.

Barn-owls

Barn owl

Order: Strigiformes   Family: Tytonidae

Barn-owls are medium to large owls with large heads and characteristic heart-shaped faces. They have long strong legs with powerful talons.

Owls

Great horned owl
Ferruginous pygmy-owl

Order: Strigiformes   Family: Strigidae

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.

Nightjars and allies

Common nighthawk
Chuck-will's-widow

Order: Caprimulgiformes   Family: Caprimulgidae

Nightjars are medium-sized nocturnal birds that usually nest on the ground. They have 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.

Potoos

Northern potoo

Order: Caprimulgiformes   Family: Nyctibiidae

The potoos (sometimes called poor-me-ones) are large near passerine birds related to the nightjars and frogmouths. They are nocturnal insectivores which lack the bristles around the mouth found in the true nightjars.

Swifts

White-throated swift

Order: Caprimulgiformes   Family: Apodidae

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.

Hummingbirds

White-necked jacobin
Rufous-tailed hummingbird
Brown violetear
Magnificent hummingbird

Order: Caprimulgiformes   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.

Trogons

Resplendent quetzal

Order: Trogoniformes   Family: Trogonidae

The family Trogonidae includes trogons and quetzals. Found in tropical woodlands worldwide, they feed on insects and fruit, and their broad bills and weak legs reflect their diet and arboreal habits. Although their flight is fast, they are reluctant to fly any distance. Trogons have soft, often colorful, feathers with distinctive male and female plumage.

Motmots

Lesson's motmot

Order: Coraciiformes   Family: Momotidae

The motmots have colorful plumage and long graduated tails which they display by waggling back and forth. In most of the species, the barbs near the ends of the two longest (central) tail feathers are weak and fall off, leaving a length of bare shaft and creating a racket-shaped tail.

Kingfishers

Green kingfisher

Order: Coraciiformes   Family: Alcedinidae

Kingfishers are medium-sized birds with large heads, long, pointed bills, short legs, and stubby tails.

Puffbirds

White-whiskered puffbird

Order: Galbuliformes   Family: Bucconidae

The puffbirds are related to the jacamars and have the same range, but lack the iridescent colors of that family. They are mainly brown, rufous, or gray, with large heads and flattened bills with hooked tips. The loose abundant plumage and short tails makes them look stout and puffy, giving rise to the English common name of the family.

Jacamars

Order: Galbuliformes   Family: Galbulidae

The jacamars are near passerine birds from tropical South America with a range that extends up to Mexico. They feed on insects caught on the wing, and are glossy, elegant birds with long bills and tails. In appearance and behavior they resemble the Old World bee-eaters, although they are more closely related to puffbirds.

Toucans

Collared aracari

Order: Piciformes   Family: Ramphastidae

Toucans are near passerine birds from the Neotropics. They are brightly marked and have enormous colorful bills which in some species amount to half their body length.

Woodpeckers

Golden-fronted woodpecker

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.

Falcons and caracaras

Crested caracara
American kestrel

Order: Falconiformes   Family: Falconidae

Falconidae is a family of diurnal birds of prey. They differ from hawks, eagles, and kites in that they kill with their beaks instead of their talons.

New World and African parrots

Orange-fronted parakeet
Yellow-naped parrot

Order: Psittaciformes   Family: Psittacidae

Parrots are small to large birds with a characteristic curved beak. Their upper mandibles have slight mobility in the joint with the skull and they have a generally erect stance. All parrots are zygodactyl, having the four toes on each foot placed two at the front and two to the back.

Typical antbirds

Barred antshrike
Great antshrike

Order: Passeriformes   Family: Thamnophilidae

The antbirds are a large family of small passerine birds of subtropical and tropical Central and South America. They are forest birds which tend to feed on insects at or near the ground. A sizable minority of them specialize in following columns of army ants to eat small invertebrates that leave their hiding places to flee from the ants. Many species lack bright color, with brown, black, and white being the dominant tones.

Antpittas

Scaled antpitta

Order: Passeriformes   Family: Grallariidae

Antpittas resemble the true pittas with strong, longish legs, very short tails, and stout bills.

Antthrushes

Order: Passeriformes   Family: Formicariidae

Ovenbirds and woodcreepers

Tawny-throated leaftosser

Order: Passeriformes   Family: Furnariidae

Ovenbirds comprise a large family of small sub-oscine passerine bird species found in Central and South America. They are a diverse group of insectivores which gets its name from the elaborate "oven-like" clay nests built by some species, although others build stick nests or nest in tunnels or clefts in rock.

Tyrant flycatchers

Common tody-flycatcher
Social flycatcher
Least flycatcher
Vermilion flycatcher
Yellowish flycatcher

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 and have stronger bills. They do not have the sophisticated vocal capabilities of the songbirds. Most, but not all, have plain coloring. As the name implies, most are insectivorous.

Cotingas

Order: Passeriformes   Family: Cotingidae

The cotingas are birds of forests or forest edges in tropical South America. Comparatively little is known about this diverse group, although all have broad bills with hooked tips, rounded wings, and strong legs. The males of many of the species are brightly colored or decorated with plumes or wattles.

Manakins

White-collared manakin

Order: Passeriformes   Family: Pipridae

The manakins are a family of subtropical and tropical mainland Central and South America, and Trinidad and Tobago. They are compact forest birds, the males typically being brightly colored, although the females of most species are duller and usually green-plumaged. Manakins feed on small fruits, berries and insects.

Tityras and allies

Masked tityra
Gray-collared becard

Order: Passeriformes   Family: Tityridae

Tityridae are suboscine passerine birds found in forest and woodland in the Neotropics. The species in this family were formerly spread over the families Tyrannidae, Pipridae, and Cotingidae. They are small to medium-sized birds. They do not have the sophisticated vocal capabilities of the songbirds. Most, but not all, have plain coloring.

Shrikes

Order: Passeriformes   Family: Laniidae

Vireos

Hutton's vireo
Warbling vireo
Black-whiskered vireo

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 color and resemble wood warblers apart from their heavier bills.

Crows, jays, and magpies

White-throated magpie-jay
Steller's jay

Order: Passeriformes   Family: Corvidae

The family Corvidae includes crows, ravens, jays, choughs, magpies, treepies, nutcrackers, and ground jays. Corvids are above average in size among the Passeriformes, and some of the larger species show high levels of intelligence.

Swallows

Mangrove swallow

Order: Passeriformes   Family: Hirundinidae

The family Hirundinidae is a group of passerines characterized by their adaptation to aerial feeding. These include a slender streamlined body, long pointed wings, and a short bill with a wide gape. The feet are adapted to perching rather than walking, and the front toes are partially joined at the base.

Long-tailed Tits

Bushtit

Order: Passeriformes   Family: Aegithalidae

Bushtits are a group of small passerine birds with medium to long tails. They make woven bag nests in trees. Most eat a mixed diet which includes insects.

Treecreepers

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.

Wrens

Rock wren
Carolina wren

Order: Passeriformes   Family: Troglodytidae

The wrens are mainly small and inconspicuous except for their loud songs. These birds have short wings and thin down-turned bills. Several species often hold their tails upright. All are insectivorous.

Gnatcatchers

Blue-gray gnatcatcher

Order: Passeriformes   Family: Polioptilidae

These dainty birds resemble Old World warblers in their build and habits, moving restlessly through the foliage seeking insects. The gnatcatchers and gnatwrens are mainly soft bluish gray in color and have the typical insectivore's long sharp bill. They are birds of fairly open woodland or scrub, which nest in bushes or trees.

Dippers

American dipper

Order: Passeriformes   Family: Cinclidae

Dippers are a group of perching birds whose habitat includes aquatic environments in the Americas, Europe, and Asia. They are named for their bobbing or dipping movements.

Kinglets

Golden-crowned kinglet

Order: Passeriformes   Family: Regulidae

The kinglets, also called crests, are a small group of birds often included in the Old World warblers, but frequently given family status because they also resemble the titmice.

Thrushes and allies

Hermit thrush
Wood thrush

Order: Passeriformes   Family: Turdidae

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.

Mockingbirds and thrashers

Gray catbird

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 vocalizations, especially their ability to mimic a wide variety of birds and other sounds heard outdoors. Their coloring tends towards dull-grays and browns.

Wagtails and pipits

American pipit

Order: Passeriformes   Family: Motacillidae

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.

Waxwings

Cedar waxwing

Order: Passeriformes   Family: Bombycillidae

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. They live on insects in summer and berries in winter.

Silky-flycatchers

Order: Passeriformes   Family: Ptiliogonatidae

The silky-flycatchers are a small family of passerine birds which occur mainly in Central America, although the range of one species extends to central California. They are related to waxwings and like that group, have soft silky plumage, usually gray or pale-yellow. They have small crests.

Olive warbler

Olive warbler

Order: Passeriformes   Family: Peucedramidae

The olive warbler is a small passerine bird, the only member of the family Peucedramidae. It is a long-winged bird with a gray body and wings with some olive-green and two white bars. The male's head and breast are orange, the female's yellow.

New World warblers

Ovenbird
Tropical parula
Northern parula
Hooded warbler
Painted redstart
Hermit warbler
Golden-cheeked warbler

Order: Passeriformes   Family: Parulidae

The New World warblers are a group of small, often colorful, passerine birds restricted to the New World. Most are arboreal, but some are terrestrial. Most members of this family are insectivores.

Tanagers and allies

Golden-hooded tanager
Green honeycreeper (male)

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 colored. They are seed eaters, but their preference tends towards fruit and nectar. Most have short, rounded wings.

Buntings and New World sparrows

Savannah sparrow

Order: Passeriformes   Family: Emberizidae

The emberizids are a large family of passerine birds. They are seed-eating birds with distinctively shaped bills. In Europe, most species are called 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.

Cardinals and allies

Flame-colored tanager
Blue bunting (male)
Yellow grosbeak

Order: Passeriformes   Family: Cardinalidae

The 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.

Troupials and allies

Bobolink
Red-winged blackbird
Montezuma oropendola

Order: Passeriformes   Family: Icteridae

The icterids are a group of small- to medium-sized, often colorful, passerine birds restricted to the New World and include the grackles, New World blackbirds, and New World orioles. Most species have black as the predominant plumage color, often enlivened by yellow, orange, or red.

Finches, euphonias, and allies

Red crossbill (males)
Lesser goldfinch

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 twelve tail feathers and nine primaries. These birds have a bouncing flight with alternating bouts of flapping and gliding on closed wings, and most sing well.

Old World sparrows

House sparrow

Order: Passeriformes   Family: Passeridae

Sparrows are small passerine birds. In general, sparrows tend to be small, plump, brown or gray birds with short tails and short powerful beaks. Sparrows are seed eaters, but they also consume small insects.

Waxbills and allies

Order: Passeriformes   Family: Estrildidae

See also

References

  1. Lepage, Denis. Checklist of birds of El Salvador, 11 October 2015. http://avibase.bsc-eoc.org/checklist.jsp?lang=EN&p2=1&list=clements&synlang=&region=SV&version=text&lifelist=&highlight=0 retrieved 26 November 2016
  2. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2016. The eBird/Clements checklist of birds of the world: v2016. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/ retrieved 11 August 2016

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