NPS National Capital Region Birds of Rock Creek Park

Birds of Rock Creek Park

Cooper's Hawk

Cooper's Hawk (Accipiter cooperii) is a medium-sized hawk native to the North American continent and found from Southern Canada to Northern Mexico. As in many birds of prey, the male is smaller than the female. The birds found east of the Mississippi River tend to be larger on average than the birds found to the west.

Sharp-shinned Hawk

The sharp-shinned hawk (Accipiter striatus) is a small hawk described from Hispaniola, with males being the smallest hawks in the United States and Canada, but with the species averaging larger than some Neotropical species, such as tiny hawk. The taxonomy is far from resolved, with some authorities considering the southern taxa to represent three separate species: ...more ↓

Red-tailed Hawk

The Red-tailed Hawk (Buteo jamaicensis) is a bird of prey, one of three species colloquially known in the United States as the "chickenhawk," though it rarely preys on standard sized chickens. It breeds throughout most of North America, from western Alaska and northern Canada to as far south as Panama and the West Indies, and is one of the most common buteos in North America. ...more ↓

Red-shouldered Hawk

The Red-shouldered Hawk (Buteo lineatus) is a medium-sized hawk. Its breeding range spans eastern North America and along the coast of California and northern to northeastern-central Mexico. Red-shouldered Hawks are permanent residents throughout most of their range, though northern birds do migrate, mostly to central Mexico. The main conservation threat to the widespread ...more ↓

Broad-winged Hawk

The Broad-winged Hawk (Buteo platypterus) is a small hawk of the genus Buteo. During the summer some subspecies are distributed over eastern North America, as far west as British Columbia and Texas; they then migrate south to winter in the neotropics from Mexico down to southern Brazil. Other subspecies are all-year residents on Caribbean islands. As in most raptors, ...more ↓

Northern Harrier

The Hen Harrier (Circus cyaneus) or Northern Harrier (in the Americas) is a bird of prey. It breeds throughout the northern parts of the northern hemisphere in Canada and the northernmost USA, and in northern Eurasia. This species is polytypic, with two subspecies. Marsh Hawk is a historical name for the American form.

Bald Eagle

The Bald Eagle (Haliaeetus leucocephalus; hali = sea, aeetus = eagle, leuco = white, cephalis = head) is a bird of prey found in North America. A sea eagle, it has two known sub-species and forms a species pair with the White-tailed Eagle (Haliaeetus albicilla). Its range includes most of Canada and Alaska, all of the contiguous United States, ...more ↓

Turkey Vulture

The Turkey Vulture (Cathartes aura), also known in some North American regions as the turkey buzzard (or just buzzard), and in some areas of the Caribbean as the John crow or carrion crow, is the most widespread of the New World vultures. One of three species in the genus Cathartes, in the family Cathartidae, the Turkey Vulture ranges from ...more ↓

Black Vulture

The Black Vulture (Coragyps atratus) also known as the American Black Vulture, is a bird in the New World vulture family whose range extends from the southeastern United States to Central Chile and Uruguay in South America. Although a common and widespread species, it has a somewhat more restricted distribution than its compatriot, the Turkey Vulture, which breeds well ...more ↓

Osprey

The Osprey (Pandion haliaetus), sometimes known as the sea hawk, fish eagle, or fish hawk, is a diurnal, fish-eating bird of prey. It is a large raptor, reaching more than 60 cm (24 in) in length and 180 cm (71 in) across the wings. It is brown on the upperparts and predominantly greyish on the head and underparts. In 1994, the osprey was declared the ...more ↓

Wood Duck

The Wood Duck or Carolina Duck (Aix sponsa) is a species of perching duck found in North America.

Northern Pintail

The Pintail or Northern Pintail (Anas acuta) is a duck with wide geographic distribution that breeds in the northern areas of Europe, Asia and North America. It is migratory and winters south of its breeding range to the equator. Unusually for a bird with such a large range, it has no geographical subspecies if the possibly conspecific duck Eaton's Pintail is considered ...more ↓

Mallard

The mallard (/ˈmælɑːrd/ or /ˈmælərd/) or wild duck (Anas platyrhynchos) is a dabbling duck which breeds throughout the temperate and subtropical Americas, Europe, Asia, and North Africa, and has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, the Falkland Islands and South Africa. This duck belongs to the subfamily Anatinae of the ...more ↓

American Black Duck

The American Black Duck (Anas rubripes) is a large dabbling duck. American Black Ducks are similar to Mallards in size, and resemble the female Mallard in coloration, although the Black Duck's plumage is darker. It is native to eastern North America and has shown reduction in numbers and increasing hybridization with the more common Mallard as that species has spread with ...more ↓

Ring-necked Duck

The Ring-necked Duck (Aythya collaris) is a diving duck from North America.

Canada Goose

The Canada Goose (Branta canadensis) is a goose with a black head and neck, white patches on the face, and a brownish-gray body. Native to arctic and temperate regions of North America, it also occasionally migrates to northern Europe, and has been introduced to Britain, New Zealand, and other temperate regions.

Bufflehead

The Bufflehead (Bucephala albeola) is a small American sea duck of the genus Bucephala, the goldeneyes. This species was first described by Linnaeus in his Systema naturae in 1758 as Anas albeola.

Snow Goose

The Snow Goose (Chen caerulescens), also known as the Blue Goose, is a North American species of goose. Its name derives from the typically white plumage. The genus of this bird is disputed. The American Ornithologists' Union and BirdLife International place this species and the other "white geese" in the Chen genus, while other authorities follow the traditional ...more ↓

Red-breasted Merganser

The red-breasted merganser (Mergus serrator) is a diving duck, one of the sawbills.

Chimney Swift

The Chimney Swift (Chaetura pelagica) is a bird belonging to the swift family Apodidae. A member of the genus Chaetura, it is closely related to both the Vaux's Swift and the Chapman's Swift; in the past, the three were sometimes considered to be conspecific. It has no subspecies.

Ruby-throated Hummingbird

The Ruby-throated Hummingbird (Archilochus colubris) is a species of hummingbird.

Common Nighthawk

The Common Nighthawk (Chordeiles minor) is a medium-sized crepuscular or nocturnal bird, whose presence and identity are best revealed by its vocalization. Typically dark (grey, black and brown), displaying cryptic colouration and intricate patterns, this bird becomes invisible by day. Once aerial, with its buoyant but erratic flight, this bird is most conspicuous. The most ...more ↓

Killdeer

The Killdeer (Charadrius vociferus) is a medium-sized plover.

Caspian Tern

The Caspian Tern (Hydroprogne caspia, formerly Sterna caspia;syn. Hydroprogne tschegrava, Helopus caspius) is a species of tern, with a subcosmopolitan but scattered distribution. Despite its extensive range, it is monotypic of its genus, and has no subspecies accepted either. In New Zealand it is also known by the Maori name Taranui.

Herring Gull

The European Herring Gull (Larus argentatus) is a large gull (up to 26 inches or 66 cm long). One of the best known of all gulls along the shores of western Europe, it was once abundant. It breeds across Northern Europe, Western Europe, Central Europe, Eastern Europe, Scandinavia and the Baltic states. Some European Herring Gulls, especially those resident in colder areas, ...more ↓

Ring-billed Gull

The Ring-billed Gull (Larus delawarensis) is a medium-sized gull.

Great Black-backed Gull

The Great Black-backed Gull (Larus marinus), also known as the Greater Black-backed Gull or, informally, as the Black-back, is the largest member of the gull family. It breeds on the European and North American coasts and islands of the North Atlantic and is fairly sedentary, though some Black-backs move farther south or inland to large lakes or reservoirs.

Laughing Gull

The Laughing Gull (Leucophaeus atricilla) is a medium-sized gull of North and South America. It breeds on the Atlantic coast of North America, the Caribbean, and northern South America. Northernmost populations migrate further south in winter, and this species occurs as a rare vagrant to western Europe. (There was an influx into North-west Europe in late October 2005 when at ...more ↓

Forster's Tern

The Forster's Tern (Sterna forsteri) is a member of the tern family Sternidae. It breeds inland in North America and winters south to the Caribbean and northern South America.

Spotted Sandpiper

The Spotted Sandpiper (Actitis macularius syn. Actitis macularia) is a small shorebird, 18–20 cm long. Together with its sister species, the Common Sandpiper (A. hypoleucos) they make up the genus Actitis. They replace each other geographically; stray birds may settle down with breeders of the other species and hybridize.

American Woodcock

The American Woodcock (Scolopax minor), sometimes colloquially referred to as the Timberdoodle, is a small chunky shorebird species found primarily in the eastern half of North America. Woodcocks spend most of their time on the ground in brushy, young-forest habitats, where the birds' brown, black, and gray plumage provides excellent camouflage.

Solitary Sandpiper

The Solitary Sandpiper (Tringa solitaria) is a small wader (shorebird).

Rock Pigeon

The rock dove (Columba livia) or rock pigeon is a member of the bird family Columbidae (doves and pigeons). In common usage, this bird is often simply referred to as the "pigeon".

Mourning Dove

The Mourning Dove (Zenaida macroura) is a member of the dove family (Columbidae). The bird is also called the Turtle Dove or the American Mourning Dove or Rain Dove, and formerly was known as the Carolina Pigeon or Carolina Turtledove. It is one of the most abundant and widespread of all North American birds. It is also the leading gamebird, ...more ↓

Belted Kingfisher

The Belted Kingfisher (Megaceryle alcyon) is a large, conspicuous water kingfisher, the only member of that group commonly found in the northern United States and Canada. It is depicted on the 1986 series Canadian $5 note. All kingfishers were formerly placed in one family, Alcedinidae, but recent research suggests that this should be divided into three. All six New World ...more ↓

Yellow-billed Cuckoo

The Yellow-billed Cuckoo (Coccyzus americanus) is a cuckoo (pronounced cuck-coo). Common folk-names for this bird in the southern United States are Rain Crow and Storm Crow. These likely refer to the bird's habit of calling on hot days, often presaging thunderstorms.

Black-billed Cuckoo

The Black-billed Cuckoo (Coccyzus erythropthalmus) is a cuckoo.

Merlin

The merlin (Falco columbarius) is a small species of falcon from the Northern Hemisphere. A bird of prey once known colloquially as a pigeon hawk in North America, the merlin breeds in the northern Holarctic; some migrate to subtropical and northern tropical regions in winter.

Peregrine Falcon

The peregrine falcon (Falco peregrinus), also known as the peregrine, and historically as the duck hawk in North America, is a widespread bird of prey in the family Falconidae. A large, crow-sized falcon, it has a blue-grey back, barred white underparts, and a black head and "moustache". As is typical of bird-eating raptors, peregrine falcons are sexually ...more ↓

American Kestrel

The American Kestrel (Falco sparverius), sometimes colloquially known as the Sparrow Hawk, is a small falcon, and the only kestrel found in the Americas. It is the most common falcon in North America, and is found in a wide variety of habitats. At 19–21 cm (7–8 in) long, it is also the smallest falcon in North America. It exhibits sexual dimorphism in size and plumage, ...more ↓

Wild Turkey

The Wild Turkey (Meleagris gallopavo) is native to North America and is the heaviest member of the diverse Galliformes. It is the same species as the domestic turkey, which was originally derived from a southern Mexican subspecies of Wild Turkey (not the related Ocellated Turkey). Although native to North America, the turkey probably got its name due to the domesticated variety ...more ↓

Common Loon

The Great Northern Loon (Gavia immer), is a large member of the loon, or diver, family of birds. The species is known as the Common Loon in North America and the Great Northern Diver in Eurasia; its current name is a compromise proposed by the International Ornithological Committee.

House Finch

The House Finch (Haemorhous mexicanus) is a bird in the finch family Fringillidae, which is found in North America. This species and the other "American rosefinches" are placed in the genus Haemorhous by the American Ornithologists' Union but have usually been included in Carpodacus.

Purple Finch

The Purple Finch (Haemorhous purpureus) is a bird in the finch family Fringillidae.

Cedar Waxwing

The Cedar Waxwing (Bombycilla cedrorum) is a member of the family Bombycillidae or waxwing family of passerine birds. It is a medium sized, mostly brown, gray, and yellow bird named for its red wax-like wing tips. It is a native of North and Central America, breeding in open wooded areas in southern Canada and wintering in the southern half of the United States, Central America, ...more ↓

Northern Cardinal

The Northern Cardinal (Cardinalis cardinalis) is a North American bird in the genus Cardinalis; it is also known colloquially as the redbird or common cardinal. It can be found in southern Canada, through the eastern United States from Maine to Texas and south through Mexico. It is found in woodlands, gardens, shrublands, and swamps.

Blue Grosbeak

Blue Grosbeak (Passerina caerulea, formerly Guiraca caerulea), is a medium-sized seed-eating bird in the same family as the Northern Cardinal, "tropical" or New World buntings, and "cardinal-grosbeaks" or New World grosbeaks.

Indigo Bunting

The Indigo Bunting (Passerina cyanea) is a small seed-eating bird in the family Cardinalidae. It is migratory, ranging from southern Canada to northern Florida during the breeding season, and from southern Florida to northern South America during the winter. It often migrates by night, using the stars to navigate. Its habitat is farmland, brush areas, and open woodland. The ...more ↓

Rose-breasted Grosbeak

The Rose-breasted Grosbeak (Pheucticus ludovicianus) is a large insect-eating songbird in the cardinal family (Cardinalidae). It is primarily a foliage gleaner. It breeds in cool-temperate North America, migrating to tropical America in winter.

Brown Creeper

The Brown Creeper (Certhia americana), also known as the American Tree Creeper, is a small songbird, the only North American member of the treecreeper family Certhiidae.

American Crow

The American Crow (Corvus brachyrhynchos) is a large passerine bird species of the family Corvidae. It is a common bird found throughout much of North America. In the interior of the continent south of the Arctic, it is referred to as simply the "crow".

Fish Crow

The Fish Crow (Corvus ossifragus) is a species of crow that is associated with wetland habitats in the eastern and southeastern United States.

Blue Jay

The Blue Jay (Cyanocitta cristata) is a passerine bird in the family Corvidae, native to North America. It is resident through most of eastern and central United States and southern Canada, although western populations may be migratory. It breeds in both deciduous and coniferous forests, and is common near and in residential areas. It is predominately blue with a white chest and ...more ↓

Dark-eyed Junco

The Dark-eyed Junco (Junco hyemalis) is the best-known species of the juncos, a genus of small grayish American sparrows. This bird is common across much of temperate North America and in summer ranges far into the Arctic. It is a very variable species, much like the related Fox Sparrow (Passerella iliaca), and its systematics is still not completely untangled.

Swamp Sparrow

The Swamp Sparrow (Melospiza georgiana) is a medium-sized sparrow related to the Song Sparrow.

Lincoln's Sparrow

Lincoln's sparrow (Melospiza lincolnii) is a medium-sized sparrow.

Song Sparrow

The Song Sparrow (Melospiza melodia) is a medium-sized American sparrow. Among the native sparrows in North America, it is easily one of the most abundant, variable and adaptable species.

Savannah Sparrow

The Savannah Sparrow (Passerculus sandwichensis) is a small American sparrow. It is the only widely accepted member of the genus Passerculus. Comparison of mtDNA NADH dehydrogenase subunit 2 and 3 sequences indicates that the Ipswich Sparrow, formerly usually considered a valid species (as Passerculus princeps), is a well-marked subspecies of ...more ↓

Fox Sparrow

The Fox Sparrow (Passerella iliaca) is a large American sparrow. It is the only member of the genus Passerella, although some authors split the genus into four species (see below).

Eastern Towhee

The Eastern Towhee (Pipilo erythrophthalmus) is a large New World sparrow. The taxonomy of the towhees has been under debate in recent decades, and formerly this bird and the Spotted Towhee were considered a single species, the Rufous-sided Towhee.

Vesper Sparrow

The Vesper Sparrow (Pooecetes gramineus) is a medium-sized American sparrow. It is the only member of the genus Pooecetes.

Clay-colored Sparrow

The Clay-colored Sparrow (Spizella pallida) is a small sparrow of North America.

Chipping Sparrow

The Chipping Sparrow (Spizella passerina) is a species of American sparrow in the family Emberizidae. It is widespread, fairly tame, and common across most of its North American range.

Field Sparrow

The Field Sparrow (Spizella pusilla) is a small sparrow.

American Tree Sparrow

The American tree sparrow (Spizelloides arborea), formerly known as the winter sparrow, is a medium-sized sparrow.

White-throated Sparrow

The White-throated Sparrow (Zonotrichia albicollis) is a passerine bird of the American sparrow family Emberizidae.

White-crowned Sparrow

The White-crowned Sparrow (Zonotrichia leucophrys) is a medium-sized sparrow native to North America.

Common Redpoll

The Common Redpoll (Carduelis flammea) is a species in the finch family. It breeds somewhat further south than the Arctic Redpoll, also in habitats with thickets or shrubs. Nominate C. f. flammea (Mealy Redpoll) breeds across the northern parts of North America and Eurasia. There is also an Icelandic subspecies, Icelandic Redpoll (C. f. islandica), ...more ↓

Evening Grosbeak

The Evening Grosbeak (Coccothraustes vespertinus) is a large finch. In the past, it was treated in a genus of its own as Hesperiphona vespertina, but is now usually placed in the same genus as the Hawfinch of Eurasia.

Red Crossbill

The red crossbill (Loxia curvirostra) is a small passerine bird in the finch family Fringillidae, also known as the common crossbill in Eurasia. Crossbills have distinctive mandibles, crossed at the tips, which enable them to extract seeds from conifer cones and other fruits.

Pine Siskin

The Pine Siskin (Carduelis pinus) is a North American bird in the finch family. It is a migratory bird with an extremely sporadic winter range.

American Goldfinch

The American Goldfinch (Carduelis tristis), also known as the Eastern Goldfinch, is a small North American bird in the finch family. It is migratory, ranging from mid-Alberta to North Carolina during the breeding season, and from just south of the Canadian border to Mexico during the winter.

Barn Swallow

The barn swallow (Hirundo rustica) is the most widespread species of swallow in the world. It is a distinctive passerine bird with blue upperparts, a long, deeply forked tail and curved, pointed wings. It is found in Europe, Asia, Africa and the Americas. In Anglophone Europe it is just called the swallow; in Northern Europe it is the only common species called a ...more ↓

Purple Martin

The Purple Martin (Progne subis) is the largest North American swallow. These aerial acrobats have speed and agility in flight, and when approaching their housing, will dive from the sky at great speeds with their wings tucked.

Sand Martin

The sand martin (Riparia riparia) or European sand martin, bank swallow in the Americas, and collared sand martin in South Asia, is a migratory passerine bird in the swallow family. It has a wide range in summer, embracing practically the whole of Europe and the Mediterranean countries, part of northern Asia and also North America. It winters in eastern and ...more ↓

Northern Rough-winged Swallow

The Northern Rough-winged Swallow (Stelgidopteryx serripennis) is a small swallow.

Tree Swallow

The Tree Swallow (Tachycineta bicolor) is a migratory passerine bird that breeds in North America and winters in Mexico, Central America and the Caribbean. It is a very rare vagrant to western Europe.

Red-winged Blackbird

The Red-winged Blackbird (Agelaius phoeniceus) is a passerine bird of the family Icteridae found in most of North and much of Central America. It breeds from Alaska and Newfoundland south to Florida, the Gulf of Mexico, Mexico, and Guatemala, with isolated populations in western El Salvador, northwestern Honduras, and northwestern Costa Rica. It may winter as far north as ...more ↓

Bobolink

The bobolink (Dolichonyx oryzivorus) is a small New World blackbird and the only member of the genus Dolichonyx.

Rusty Blackbird

The Rusty Blackbird (Euphagus carolinus) is a medium-sized blackbird, closely related to grackles (Rusty Grackle is an older name for the species). It is a bird that prefers wet forested areas, breeding in the boreal forest and muskeg across northern Canada, and migrating southeast to the United States during winter.

Baltimore Oriole

The Baltimore Oriole (Icterus galbula) is a small icterid blackbird that commonly occurs in eastern North America as a migratory breeding bird. This bird received its name from the fact that the male's colors resemble those on the coat-of-arms of Lord Baltimore. Like all icterids called "orioles", it is named after an unrelated, physically similar family found in the Old World: ...more ↓

Orchard Oriole

The Orchard Oriole (Icterus spurius) is the smallest North American species of icterid blackbird. The subspecies of the Caribbean coast of Mexico, I. s. fuertesi, is sometimes considered a separate species, the Ochre Oriole.

Brown-headed Cowbird

The Brown-headed Cowbird (Molothrus ater) is a small brood parasitic icterid of temperate to subtropical North America. They are permanent residents in the southern parts of their range; northern birds migrate to the southern United States and Mexico in winter, returning to their summer habitat around March or April.

Common Grackle

The Common Grackle (Quiscalus quiscula) is a large icterid which is found in large numbers through much of North America.

Eastern Meadowlark

The Eastern Meadowlark (Sturnella magna) is a medium-sized icterid bird, very similar in appearance to the Western Meadowlark. It occurs from eastern North America to South America, where it is also most widespread in the east.

Gray Catbird

The Gray Catbird (Dumetella carolinensis), also spelled Grey Catbird, is a medium-sized northern American perching bird of the mimid family. It is the only member of the "catbird" genus Dumetella. Like the Black Catbird (Melanoptila glabrirostris), it is among the basal lineages of the Mimidae, probably a closer relative of the Caribbean thrasher and ...more ↓

Northern Mockingbird

The Northern Mockingbird (Mimus polyglottos) is the only mockingbird commonly found in North America. This bird is mainly a permanent resident, but northern birds may move south during harsh weather. This species has rarely been observed in Europe. This species was first described by Linnaeus in his Systema Naturæ in 1758 as Turdus polyglottos. The Northern ...more ↓

Brown Thrasher

The Brown Thrasher (Toxostoma rufum) is a bird in the family Mimidae, which also includes the New World catbirds and mockingbirds. The dispersal of the Brown Thrasher is abundant throughout the eastern and central United States, southern and central Canada, and is the only thrasher to live primarily east of the Rockies and central Texas. It is the state bird of Georgia.

American Pipit

The Buff-bellied Pipit (Anthus rubescens), or American Pipit as it is known in North America, is a small songbird found on both sides of the northern Pacific. It was first described by Marmaduke Tunstall in his 1771 Ornithologia Britannica. It was formerly classified as a form of the Water Pipit.

Tufted Titmouse

The Tufted Titmouse (Baeolophus bicolor) is a small songbird from North America, a species in the tit and chickadee family (Paridae). The Black-crested Titmouse, found from central and southern Texas southwards, was included as a subspecies but is now considered a separate species B. atricristatus.

Black-capped Chickadee

The Black-capped Chickadee (Poecile atricapillus) is a small, North American songbird, a passerine bird in the tit family Paridae. It is the state bird of both Maine and Massachusetts in the United States, and the provincial bird of New Brunswick in Canada. It is notable for its capacity to lower its body temperature during cold winter nights, its good spatial memory to relocate ...more ↓

Carolina Chickadee

The Carolina Chickadee (Poecile carolinensis) is a small passerine bird in the tit family Paridae. It is often placed in the genus Parus with most other tits, but mtDNA cytochrome b sequence data and morphology suggest that separating Poecile more adequately expresses these birds' relationships (Gill et al., 2005). The American Ornithologists' Union ...more ↓

Canada Warbler

The Canada warbler (Cardellina canadensis) is a small 13 cm (5.1 in) long songbird of the New World warbler family.

Wilson's Warbler

The Wilson's Warbler (Cardellina pusilla) is a small New World warbler. It is greenish above and yellow below, with rounded wings and a long, slim tail. The male has a black crown patch; depending on the subspecies, that mark is reduced or absent in the female. It breeds across Canada and south through the western United States, and winters from Mexico south through much of ...more ↓

Kentucky Warbler

The Kentucky Warbler (Geothlypis formosa) is a small species of New World warbler. The Kentucky Warbler, is a sluggish and heavy warbler with a short tail, preferring to spend most of its time on or near the ground, except when singing.

Mourning Warbler

The Mourning Warbler (Geothlypis philadelphia) is a small songbird of the New World warbler family.

Common Yellowthroat

The Common Yellowthroat (Geothlypis trichas) is a New World warbler. They are abundant breeders in North America, ranging from southern Canada to central Mexico.

Worm-eating Warbler

The Worm-eating Warbler (Helmitheros vermivorum) is a small New World warbler.

Yellow-breasted Chat

The Yellow-breasted Chat (Icteria virens) is a large songbird, formerly considered the most atypical member of the New World warbler family, though the long-standing suspicion is that it does not actually belong there. Its placement is not definitely resolved. It is the only member of the genus Icteria.

Orange-crowned Warbler

The Orange-crowned Warbler (Oreothlypis celata) is a small songbird of the New World warbler family.

Edited by gmsanders, lfratb, and sanders_geoffm, some rights reserved (CC BY-SA)