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x Red-throated Diver Adult in breeding plumage Checklist of Birds of the City of San Francisco Fairly Common Rare
The Red-throated Loon or Red-throated Diver (Gavia stellata), is a migratory aquatic bird found in the northern hemisphere; it breeds primarily in Arctic regions, and winters in northern coastal waters. It is the most widely distributed member of...
Checklist of Birds of the San Francisco Bay National Wildlife Refuge Occasional Rare
Elkhorn Slough Bird Checklist Uncommon Occasional
Checklist of the Birds of Sutro Heights Rare  
Checklist of Birds of Vermont    
x Black-throated Diver Plongeon arctique nid Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon  
The Black-throated Loon (Gavia arctica), is a medium-sized member of the loon or diver family. The species is known as a Arctic Loon in North America and the Black-throated Diver in Eurasia, its current name is a compromise proposed by the...
x Common Loon Commonloonudfs Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Rare
The Great Northern Loon, Great Northern Diver, or Common Loon (Gavia immer), is a large member of the loon, or diver, family of birds. The species is known as a Common Loon in North America and the Great Northern Diver in Eurasia, its current name...
Elkhorn Slough Bird Checklist Common Occasional
Checklist of Birds of the City of San Francisco Fairly Common Uncommon
Checklist of the Birds of Sutro Heights Rare  
Checklist of Birds of Vermont    
x Pied-billed Grebe Pied-billed Grebe. Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The Pied-billed Grebe (Podilymbus podiceps) is a species of the grebe family of water birds. Since the Atitlán Grebe, Podilymbus gigas, has become extinct, it is the sole extant member of the genus Podilymbus. The Pied-billed Grebe is small, stocky,...
Elkhorn Slough Bird Checklist Uncommon Uncommon
Checklist of Birds of the City of San Francisco Common Common
Checklist of the Birds of Sutro Heights Uncommon Rare
Checklist of Birds of Vermont    
x Horned Grebe Podiceps auritus1 Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Rare
The Horned Grebe or Slavonian Grebe, Podiceps auritus, is a member of the grebe family of water birds. It is a small grebe at 31–38 cm (12–15 in) long with a 46–55 cm wingspan. Unmistakable in summer, the male's plumage includes a black head with...
Elkhorn Slough Bird Checklist Occasional Extremely Rare
Checklist of Birds of the City of San Francisco Uncommon  
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
x Red-necked Grebe Red-necked Grebe Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare  
The Red-necked Grebe, Podiceps grisegena, is a migratory aquatic bird that is found in the temperate regions of the northern hemisphere. Its wintering habitat is largely restricted to calm waters just beyond the waves around ocean coasts, although...
Elkhorn Slough Bird Checklist Occasional  
Checklist of Birds of the City of San Francisco Rare  
Checklist of the Birds of Sutro Heights Extremely Rare  
Checklist of Birds of Vermont    
x Eared Grebe Podiceps nigricollis nigricollis, breeding plumage Checklist of Birds of the San Francisco Bay National Wildlife Refuge Abundant Uncommon
The Black-necked Grebe, Podiceps nigricollis, known in North America as the Eared Grebe, is a member of the grebe family of water birds. It occurs on every continent except Australia and Antarctica. There are three subspecies: The two common names...
Elkhorn Slough Bird Checklist Uncommon Extremely Rare
Checklist of Birds of the City of San Francisco Uncommon  
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
x Western Grebe Western Grebe Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Uncommon
The Western Grebe, (Aechmophorus occidentalis), is a species in the grebe family of water birds. Folk names include "dabchick", "swan grebe" and "swan-necked grebe". This is the largest North American grebe 56-74 cm (22"-29") long. It is black-and...
Elkhorn Slough Bird Checklist Common Uncommon
Checklist of Birds of the City of San Francisco Abundant Fairly Common
Checklist of the Birds of Sutro Heights Uncommon Extremely Rare
x American White Pelican Adult Checklist of Birds of the San Francisco Bay National Wildlife Refuge Occasional Common
The American White Pelican or Rough-billed Pelican (Pelecanus erythrorhynchos) is a large aquatic bird from the order Pelecaniformes. It breeds in interior North America, moving south and to the coasts, up to Central America, in winter. The...
Elkhorn Slough Bird Checklist Rare Rare
Checklist of Birds of the City of San Francisco Occasional Occasional
Checklist of Birds of Vermont    
x Brown Pelican Brown Pelican Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare Uncommon
The Brown Pelican (Pelecanus occidentalis) is the smallest of the eight species of pelican, although it is a large bird in nearly every other regard. It is 106-137 cm (42-54 in) in length, weighs from 2.75 to 5.5 kg (6-12 lb) and has a wingspan from...
Elkhorn Slough Bird Checklist Uncommon Common
Checklist of Birds of the City of San Francisco Uncommon Common
Checklist of the Birds of Sutro Heights Common Abundant
x Double-crested Cormorant Phalacrocorax-auritus-007 Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Common
The Double-crested Cormorant (Phalacrocorax auritus) is a member of the cormorant family of seabirds. It occurs along inland waterways as well as in coastal areas, and is widely distributed across North America, from the Aleutian Islands in Alaska...
Elkhorn Slough Bird Checklist Common Occasional
Checklist of Birds of the City of San Francisco Common Common
Checklist of the Birds of Sutro Heights Common Uncommon
Checklist of Birds of Vermont    
x Brandt's Cormorant Cormorant03262006a Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare Occasional
The Brandt's Cormorant (Phalacrocorax penicillatus) is a strictly marine bird of the cormorant family of seabirds that inhabits the Pacific coast of North America. It ranges, in the summer, from Alaska to the Gulf of California, but the population...
Elkhorn Slough Bird Checklist Common Uncommon
Checklist of Birds of the City of San Francisco Abundant Abundant
Checklist of the Birds of Sutro Heights Abundant Abundant
x Pelagic Cormorant Phalacrocorax pelagicus Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Uncommon
The Pelagic Cormorant (Phalacrocorax pelagicus), also known as Baird's Cormorant, is a small member of the cormorant family Phalacrocoracidae. Analogous to other smallish cormorants, it is also called Pelagic Shag occasionally. This seabird lives...
Elkhorn Slough Bird Checklist Uncommon Uncommon
Checklist of Birds of the City of San Francisco Uncommon Uncommon
Checklist of the Birds of Sutro Heights Rare Extremely Rare
x American Bittern Botaurus lentiginosus 28079 Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Occasional
The American Bittern (Botaurus lentiginosus) is a wading bird of the heron family Ardeidae. It is a large, chunky, brown bird, very similar to the Eurasian Great Bittern, Botaurus stellaris. It is 59–70 cm (23-27 inches) in length, with a 95–115 cm ...
Elkhorn Slough Bird Checklist Rare Occasional
Checklist of Birds of the City of San Francisco Accidental  
Checklist of Birds of Vermont    
Checklist of the Birds of Tennessee National Wildlife Refuge Uncommon  
x Least Bittern LeastBittern23 Checklist of Birds of the San Francisco Bay National Wildlife Refuge    
The Least Bittern (Ixobrychus exilis) is a small wading bird, the smallest heron found in the Americas. This bird's underparts and throat are white with light brown streaks. Their face and the sides of the neck are light brown; they have yellow eyes...
Checklist of Birds of the City of San Francisco    
Checklist of Birds of Vermont    
x Great Blue Heron Blacklinebirdcrop Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The Great Blue Heron (Ardea herodias) is a large wading bird in the heron family Ardeidae, common near the shores of open water and in wetlands over most of North and Central America as well as the West Indies and the Galápagos Islands. It is a rare...
Elkhorn Slough Bird Checklist Common Common
Checklist of Birds of the City of San Francisco Fairly Common Fairly Common
Checklist of the Birds of Muir Woods National Monument   Uncommon
Checklist of the Birds of Sutro Heights Common Rare
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x Great Egret Great white Egret is a symbol of Hutovo Blato Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The Great Egret (Ardea alba), also known as the Great White Egret or Common Egret or (now not in use) Great White Heron, and called kōtuku in New Zealand, is a large egret. Distributed across most of the tropical and warmer temperate regions of the...
Elkhorn Slough Bird Checklist Common Common
Checklist of Birds of the City of San Francisco Fairly Common Fairly Common
Checklist of the Birds of Sutro Heights Rare Extremely Rare
Checklist of Birds of Vermont    
x Snowy Egret Egretta thula1 Checklist of Birds of the San Francisco Bay National Wildlife Refuge Abundant Abundant
The Snowy Egret (Egretta thula) is a small white heron. It is the American counterpart to the very similar Old World Little Egret, which has established a foothold in the Bahamas. Adults are typically 61 centimetres (24 in) long and weigh 375 grams ...
Elkhorn Slough Bird Checklist Common Uncommon
Checklist of Birds of the City of San Francisco Fairly Common Fairly Common
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
x Little Blue Heron Egretta caerulea Checklist of Birds of the San Francisco Bay National Wildlife Refuge Occasional Occasional
The Little Blue Heron, Egretta caerulea, is a small heron. It breeds from the Gulf states of the USA through Central America and the Caribbean south to Peru and Uruguay. It is a resident breeder in most of its range, but some northern breeders...
Checklist of Birds of Vermont    
x Cattle Egret Cattle Egret Checklist of Birds of the San Francisco Bay National Wildlife Refuge Occasional Occasional
The Cattle Egret (Bubulcus ibis) is a cosmopolitan species of heron (family Ardeidae) found in the tropics, subtropics and warm temperate zones. It is the only member of the monotypic genus Bubulcus, although some authorities regard its two...
Elkhorn Slough Bird Checklist Rare  
Checklist of Birds of the City of San Francisco    
Checklist of Birds of Vermont    
x Green Heron Green Heron Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare Occasional
The Green Heron (Butorides virescens) is a small heron of North and Central America. It was long considered conspecific with its sister species the Striated Heron (Butorides striata), and together they were called "Green-backed Heron". Birds of the...
Elkhorn Slough Bird Checklist Occasional Rare
Checklist of Birds of the City of San Francisco Uncommon Rare
Checklist of Birds of Vermont    
x Black-crowned Night Heron Black-crowned Night Heron, Nycticorax nycticorax Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The Black-crowned Night Heron (Nycticorax nycticorax) commonly abbreviated to just Night Heron in Eurasia, is a medium-sized heron found throughout a large part of the world, except in the coldest regions and Australasia (where replaced by the...
Elkhorn Slough Bird Checklist Uncommon Uncommon
Checklist of Birds of the City of San Francisco Fairly Common Fairly Common
Checklist of Birds of Vermont    
x White-faced Ibis Plegadis chihi Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare  
The White-faced Ibis (Plegadis chihi) is a wading bird in the ibis family Threskiornithidae. This species breeds colonially in marshes, usually nesting in bushes or low trees. Its breeding range extends from the western USA south through Mexico, as...
Elkhorn Slough Bird Checklist Rare Rare
Checklist of Birds of the City of San Francisco Accidental Accidental
x Tundra Swan Cygnus bewickii 01 Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare  
The Tundra Swan (Cygnus columbianus) is a small Holarctic swan. The two taxa within it are usually regarded as conspecific, but are also sometimes split into two species, Cygnus bewickii (Bewick's Swan) of the Palaearctic and the Whistling Swan, C....
Elkhorn Slough Bird Checklist    
Checklist of Birds of the City of San Francisco Accidental  
Checklist of Birds of Vermont    
x White-fronted Goose Anser albifrons subsp. albifrons Checklist of Birds of the City of San Francisco Rare Accidental
The Greater White-fronted Goose (Anser albifrons) is a goose species closely related to the smaller Lesser White-fronted Goose (A. erythropus). In Europe it has been known as simply "White-fronted Goose"; in North America it is known as the Greater...
Checklist of Birds of the San Francisco Bay National Wildlife Refuge    
Elkhorn Slough Bird Checklist Extremely Rare  
Checklist of Birds of Vermont    
Checklist of Birds of Vermont    
x Snow Goose Blue morph Lesser Snow Goose Checklist of Birds of the San Francisco Bay National Wildlife Refuge    
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...
Elkhorn Slough Bird Checklist    
Checklist of Birds of the City of San Francisco Occasional  
Checklist of Birds of Vermont    
Checklist of Birds of Vermont    
x Ross's Goose Ross's Geese at Lower Klamath National Wildlife Refuge Elkhorn Slough Bird Checklist Extremely Rare  
The Ross's Goose (Chen rossii or Anser rossii) is a North American species of goose. The American Ornithologists' Union places this species and the other two "white" geese in the genus Chen rather than the more traditional "grey" goose genus Anser....
Checklist of Birds of the City of San Francisco Occasional  
Checklist of Birds of the San Francisco Bay National Wildlife Refuge    
Checklist of Birds of Vermont    
Checklist of Birds of Vermont    
x Brant Dark-bellied Brent Geese Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare Rare
The Brant Goose (Branta bernicla), a goose of the genus Branta, is known in North America as Brant, Brent Goose or Black Brant. The spelling "Brant" is the original one, with "Brent" being a later folk-etymological idea that it was derived from a...
Elkhorn Slough Bird Checklist Uncommon Rare
Checklist of Birds of the City of San Francisco Rare Accidental
Checklist of the Birds of Sutro Heights Rare  
Checklist of Birds of Vermont    
x Canada Goose Atlantic or Interior Canada Goose Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Rare
The Canada Goose (Branta canadensis) is a wild goose belonging to the genus Branta, which is native to Arctic and temperate regions of North America, having a black head and neck, white patches on the face, and a brownish-gray body. It is quite...
Elkhorn Slough Bird Checklist Common Common
Checklist of Birds of the City of San Francisco Fairly Common Uncommon
Checklist of the Birds of Sutro Heights Extremely Rare  
Checklist of Birds of Vermont    
x Green-winged Teal male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Occasional
The Green-winged Teal (GWT, Anas carolinensis) is a common and widespread duck which breeds in the northern areas of North America except on the Aleutian Islands. It was considered conspecific with the Common Teal (A. crecca) for some time, and the...
Elkhorn Slough Bird Checklist Uncommon Extremely Rare
Checklist of Birds of the City of San Francisco Rare  
Checklist of the Birds of Sutro Heights Extremely Rare  
Checklist of Birds of Vermont    
x Mallard Two Mallard drakes and one female Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The Mallard (Anas platyrhynchos), probably the best-known and most recognizable of all ducks, is a dabbling duck which breeds throughout the temperate and sub-tropical areas of North America, Europe, Asia, Africa, New Zealand (where it is currently...
Elkhorn Slough Bird Checklist Common Common
Checklist of Birds of the City of San Francisco Common Common
Checklist of the Birds of Muir Woods National Monument Uncommon Uncommon
Checklist of the Birds of Sutro Heights Abundant Common
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x Northern Pintail Male and female (left-right)Call (help·info) Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The Pintail or Northern Pintail (Anas acuta) is a widely occurring duck which breeds in the northern areas of Europe, Asia and North America. It is strongly migratory and winters south of its breeding range to the equator. Unusually for a bird with...
Elkhorn Slough Bird Checklist Common  
Checklist of Birds of the City of San Francisco Rare  
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
x Blue-winged Teal Male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Occasional Rare
The Blue-winged Teal (Anas discors) is a small dabbling duck. Its placement in Anas is by no means certain; a member of the "blue-winged" group also including the shovelers, it may be better placed in Spatula. It is not a teal in the strict sense,...
Elkhorn Slough Bird Checklist Uncommon Extremely Rare
Checklist of Birds of the City of San Francisco Occasional Accidental
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
x Cinnamon Teal Anas cyanoptera septentrionalium drake (male) Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Uncommon
The Cinnamon Teal (Anas cyanoptera) is a small, reddish dabbling duck found in marshes and ponds of western North and South America. The adult male has a cinnamon-red head and body with a brown back, a red eye and a dark bill. The adult female has a...
Elkhorn Slough Bird Checklist Common Uncommon
Checklist of Birds of the City of San Francisco Rare  
Checklist of the Birds of Sutro Heights Extremely Rare  
x Northern Shoveler Male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Uncommon
The Northern Shoveler (Anas clypeata), sometimes known simply as the Shoveler (pronounced /ˈʃʌvələr/), is a common and widespread duck. It breeds in northern areas of Europe and Asia and across most of North America, and is a rare vagrant to...
Elkhorn Slough Bird Checklist Common Uncommon
Checklist of Birds of the City of San Francisco Uncommon  
Checklist of the Birds of Sutro Heights Extremely Rare  
Checklist of Birds of Vermont    
x Eurasian Wigeon Eurasian Checklist of Birds of the San Francisco Bay National Wildlife Refuge    
The Wigeon or Eurasian Wigeon (Anas penelope, previously Mareca penelope) is one of three species of wigeon in the dabbling duck genus Anas. It is common and widespread within its range. This species was first described by Linnaeus in his Systema...
Elkhorn Slough Bird Checklist Extremely Rare  
Checklist of Birds of the City of San Francisco Rare  
Checklist of Birds of Vermont    
x American Wigeon Male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Uncommon
The American Wigeon (also American Widgeon or Baldpate), Anas americana is a species of wigeon in the dabbling duck genus Anas. If this is split up, all wigeons will go into their old genus Mareca again. It is a common and widespread duck which...
Elkhorn Slough Bird Checklist Uncommon  
Checklist of Birds of the City of San Francisco Fairly Common  
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
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x Redhead Redhead duck 1 Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare  
The Redhead (Aythya americana) is a medium-sized diving duck, 37 cm long with an 84 cm wingspan. The adult male has a blue bill, a red head and neck, a black breast, yellow eyes and a grey back. The adult female has a brown head and body and a...
Elkhorn Slough Bird Checklist Rare  
Checklist of Birds of the City of San Francisco    
Checklist of Birds of Vermont    
x Ring-necked Duck Drake (male) Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare  
The Ring-necked Duck (Aythya collaris) is a smaller diving duck from North America. The adult male is similar in color pattern to the Eurasian Tufted Duck, its relative. It has a grey bill with a white band, a shiny purple head, a white breast,...
Elkhorn Slough Bird Checklist Rare  
Checklist of Birds of the City of San Francisco Fairly Common  
Checklist of the Birds of Sutro Heights Extremely Rare  
Checklist of Birds of Vermont    
x Lesser Scaup Adult drake (male) Checklist of Birds of the San Francisco Bay National Wildlife Refuge Abundant Occasional
Aythya affinis, the Lesser Scaup (singular and plural), is a small North American diving duck that migrates south as far as Central America in winter. It is colloquially known as the Little Bluebill or Broadbill. It is apparently a very close...
Elkhorn Slough Bird Checklist Uncommon Extremely Rare
Checklist of Birds of the City of San Francisco Uncommon  
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
x Long-tailed Duck Male Elkhorn Slough Bird Checklist    
The Long-tailed Duck (Clangula hyemalis) is a medium-sized sea duck. It is the only living member of its genus, Clangula; this was formerly used for the goldeneyes, with the Long-tailed Duck being placed in Harelda. An undescribed congener is known...
Checklist of Birds of the City of San Francisco Occasional  
Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare Rare
Checklist of Birds of Vermont    
x Black Scoter Adult male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare  
The Black or American Scoter (Melanitta americana) is a large sea duck, 43 to 49 centimeters in length. Together with the Common Scoter M. nigra, it forms the subgenus Oidemia; the two are sometimes considered conspecific, the Black Scoter then...
Elkhorn Slough Bird Checklist    
Checklist of Birds of the City of San Francisco Uncommon Rare
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
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x Surf Scoter Adult male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Rare
The Surf Scoter (Melanitta perspicillata) is a large sea duck, which breeds in Canada and Alaska. It is placed in the subgenus Melanitta, along with the Velvet and White-winged Scoters, distinct from the subgenus Oidemia, Black and Common Scoters....
Elkhorn Slough Bird Checklist Common Occasional
Checklist of Birds of the City of San Francisco Common Uncommon
Checklist of the Birds of Sutro Heights Extremely Rare Extremely Rare
Checklist of Birds of Vermont    
x White-winged Scoter Adult male White-winged Scoter (Melanitta deglandi) Checklist of Birds of the San Francisco Bay National Wildlife Refuge Occasional  
The White-winged Scoter (Melanitta deglandi) is a large sea duck. It is characterised by its bulky shape and large bill. This is the largest species of scoter. Females range from 950-1950 grams (2.1-4.2 lb) and 48–56 cm (19-22 inches), averaging...
Elkhorn Slough Bird Checklist Uncommon Rare
Checklist of Birds of the City of San Francisco Uncommon Accidental
Checklist of the Birds of Sutro Heights Extremely Rare  
Checklist of Birds of Vermont    
x Common Goldeneye A Goldeneye, a common winter visitor to the sanctuary Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Rare
The Common Goldeneye (Bucephala clangula) is a medium sized sea duck of the genus Bucephala, the goldeneyes. Their closest relative is the similar Barrow's goldeneye. Adult males ranges from 45–52 cm (18-21 inches) and from 888 to 1400 grams (1.9 to...
Elkhorn Slough Bird Checklist Uncommon Extremely Rare
Checklist of Birds of the City of San Francisco Uncommon  
Checklist of the Birds of Sutro Heights Extremely Rare  
Checklist of Birds of Vermont    
x Barrow's Goldeneye Male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare  
Barrow's Goldeneye (Bucephala islandica) is a medium-sized sea duck of the genus Bucephala, the goldeneyes. This bird was named after Sir John Barrow. Adults are similar in appearance to the Common Goldeneye. Adult males have a dark head with a...
Elkhorn Slough Bird Checklist    
Checklist of Birds of the City of San Francisco    
Checklist of Birds of Vermont    
x Bufflehead male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Occasional
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. The Bufflehead ranges from 32-40 cm long (12.5-16...
Elkhorn Slough Bird Checklist Uncommon Extremely Rare
Checklist of Birds of the City of San Francisco Fairly Common  
Checklist of the Birds of Sutro Heights Extremely Rare  
Checklist of Birds of Vermont    
x Hooded Merganser Male Checklist of Birds of the San Francisco Bay National Wildlife Refuge    
The Hooded Merganser (Lophodytes cucullatus) is a small duck and is the only member of the genus Lophodytes. Hooded Mergansers have a crest at the back of the head which can be expanded or contracted. In adult males, this crest has a large white...
Elkhorn Slough Bird Checklist    
Checklist of Birds of the City of San Francisco Rare  
Checklist of Birds of Vermont    
x Common Merganser Common Merganser Checklist of Birds of the San Francisco Bay National Wildlife Refuge Rare  
The Common Merganser (Mergus merganser), also known as a the gulaund or goosander, is a large-sized duck, which is distributed over Europe, North Asia and North America. It is most common on lakes and rivers. Its nests can be found in treeholes....
Elkhorn Slough Bird Checklist Extremely Rare Extremely Rare
Checklist of Birds of the City of San Francisco Accidental  
Checklist of Birds of Vermont    
x Red-breasted Merganser Red-breasted Merganser (Mergus serrator) Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon  
The Red-breasted Merganser (Mergus serrator) is a diving duck. Its breeding habitat is freshwater lakes and rivers across northern North America, Greenland, Europe and Asia. It nests in sheltered locations on the ground near water. It is migratory...
Elkhorn Slough Bird Checklist Uncommon Occasional
Checklist of Birds of the City of San Francisco Fairly Common  
Checklist of Birds of Vermont    
x Ruddy Duck Male Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The Ruddy Duck (Oxyura jamaicensis) is a small stiff-tailed duck. Adult males have a rust-red body, a blue bill, and a white face with a black cap. Adult females have a grey-brown body with a greyish face with a darker bill, cap and a cheek stripe....
Elkhorn Slough Bird Checklist Common Common
Checklist of Birds of the City of San Francisco Common Uncommon
Checklist of Birds of Vermont    
x Turkey Vulture Turkey Vulture in woods Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon Uncommon
The Turkey Vulture, Cathartes aura, is a bird found throughout most of the Americas. It 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. One of...
Elkhorn Slough Bird Checklist Common Common
Checklist of Birds of the City of San Francisco Uncommon Uncommon
Checklist of the Birds of Muir Woods National Monument Common Common
Checklist of the Birds of Sutro Heights    
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x Osprey Osprey Checklist of Birds of the San Francisco Bay National Wildlife Refuge Occasional Occasional
The Osprey (Pandion haliaetus), sometimes known as the sea hawk, is a diurnal, fish-eating bird of prey. It is a large raptor, reaching 60 centimetres (24 in) in length with a 1.8 metre (6 ft) wingspan. It is brown on the upperparts and...
Elkhorn Slough Bird Checklist Occasional Rare
Checklist of Birds of the City of San Francisco Uncommon Uncommon
Checklist of the Birds of Sutro Heights Extremely Rare Rare
Checklist of Birds of Vermont    
x White-tailed Kite White-tailed Kite Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The White-tailed Kite (Elanus leucurus) is an elanid kite found in western North America and parts of South America. Their coloration is gull-like, but their shape and flight falcon-like, with a rounded tail. Mainly white underneath, they have black...
Elkhorn Slough Bird Checklist Uncommon Uncommon
Checklist of Birds of the City of San Francisco Rare Accidental
x Bald Eagle Bald Eagle Checklist of Birds of the San Francisco Bay National Wildlife Refuge   Rare
The Bald Eagle (Haliaeetus leucocephalus) is a bird of prey found in North America that is most recognizable as the national bird and symbol of the United States of America. This sea eagle has two known sub-species and forms a species pair with the...
Elkhorn Slough Bird Checklist    
Checklist of Birds of the City of San Francisco Occasional  
Checklist of Birds of Vermont    
Checklist of the Birds of Tennessee National Wildlife Refuge Rare  
x Northern Harrier Northern Harrier Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
The Hen Harrier (Circus cyaneus) or Northern Harrier (in North America) 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,...
Elkhorn Slough Bird Checklist Uncommon Occasional
Checklist of Birds of the City of San Francisco Rare  
Checklist of the Birds of Sutro Heights    
Checklist of Birds of Vermont    
x Sharp-shinned Hawk Sharp-shinned Hawk (nominate group). Checklist of Birds of the San Francisco Bay National Wildlife Refuge Uncommon  
The Sharp-shinned Hawk (Accipiter striatus) is a small hawk. In fact, "sharp-shins" are the smallest to reside in USA and Canada, though some Neotropical species are smaller (notably the aptly named Tiny Hawk). The taxonomy is far from resolved,...
Elkhorn Slough Bird Checklist Uncommon  
Checklist of Birds of the City of San Francisco Uncommon Occasional
Checklist of the Birds of Muir Woods National Monument Fairly Common Fairly Common
Checklist of the Birds of Sutro Heights    
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x Cooper's Hawk Cooper's Hawk Checklist of Birds of the San Francisco Bay National Wildlife Refuge Occasional  
Cooper's Hawk (Accipiter cooperii) is a medium-sized hawk native to the North American continent and found from Canada to 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...
Elkhorn Slough Bird Checklist Uncommon Occasional
Checklist of Birds of the City of San Francisco Uncommon Uncommon
Checklist of the Birds of Muir Woods National Monument Uncommon  
Checklist of the Birds of Sutro Heights Uncommon Uncommon
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x Red-tailed Hawk Red-tailed Hawk Checklist of Birds of the San Francisco Bay National Wildlife Refuge Common Common
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 chickens. It breeds throughout most of North America, from western Alaska and...
Elkhorn Slough Bird Checklist Common Common
Checklist of Birds of the City of San Francisco Fairly Common Fairly Common
Checklist of the Birds of Muir Woods National Monument Common Common
Checklist of the Birds of Sutro Heights Abundant Abundant
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x Ferruginous Hawk Ferruginous Hawk Checklist of Birds of the San Francisco Bay National Wildlife Refuge    
The Ferruginous Hawk (ferruginous = from Latin ferrum - iron, ferrgin-, iron rust, iron-rust color - reddish-brown), Buteo regalis (Latin, royal hawk), is a large bird of prey. It is not a true hawk like sparrowhawks or goshawks, but rather belongs...
Elkhorn Slough Bird Checklist    
Checklist of Birds of the City of San Francisco    
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