Author: John Cammidge

Cory’s Shearwater and Birds of the Portuguese Azores and Madeira

Cory’s Shearwater and Birds of the Portuguese Azores and Madeira

Cory’s Shearwater off the coast of Madeira, Portugal Photo Credit – Author   Cory’s Shearwater is a large, heavy bird and a member of the seabird family Procelleridae. It breeds primarily in the Portuguese islands of the Azores and Madeira and the Canary Islands, Spain.  

To See a Mockingbird

To See a Mockingbird

Northern Mockingbird Photo Credit – the Author    Amidst a cacophony of mid-morning birdsong, a medium-sized bird, approximately 10 inches (25 cm) in length, caught my eye. Its tail, as long as its body, was a striking feature. The bird’s plumage was a mix of 

Scaup, A Confusion of Ducks and Geese

Scaup, A Confusion of Ducks and Geese

Greater Scaup (male with the white plumage)

Photo Credit – Cornell Lab: All About Birds

 

California winter visitors, the Greater Scaup, have recently left the coastal creek near my home and returned to their breeding grounds along the West Coast up to Alaska. Previously, I have written about ducks known as Buffleheads and Teal; now, it is the turn of the Scaup: Lesser and Greater. The name probably originates from the Scot’s word scalp, meaning a bed of shellfish, a favorite food of the duck. Alternatively, some suggest the word comes from the female’s scaup call. Its nickname in North America is Bluebill because of its distinctive blue bill. 

Both species of Scaup are medium-sized and similar in appearance, except for the longer, whitish band on the wings of the Greater Scaup and its rounded head, whereas the Lesser Scaup’s head is peaked. Large bodies of water, often near the coast, are home to the Greater, and the Lesser inhabits marshes and ponds. Both dive underwater for food, and while the most common dabbling duck in the United States is the Mallard, the Lesser Scaup is the most numerous diving duck.

 

Greater and Lesser Scaup comparison
Greater/Lesser Scaup (Greater is whiter)

Photo Credit – Cornell Lab, All About Birds

 

I recorded Scaup during my childhood in Yorkshire, England. After leaving their breeding grounds in Iceland, Scandinavia, and western Russia, they were winter visitors. As winters have become warmer and wetter, there are fewer Scaup, with the British population estimated to have shrunk 75 percent since the mid-1970s. Britain also hosts the “Lesser” variety as a rare vagrant, with the first recorded sighting in the 1980s. 

 

Greater Scaup Global Range Map
Greater Scaup Global Range

Photo Credit – WWT Slimbridge Wetland Center

Blue: breeding; Red: winter and migration

 

 

Lesser Scaup Range Map
Lesser Scaup Range

Photo Credit – Cornell Lab, All About Birds

 

What makes a Scaup a duck and not a goose since both are in the same waterfowl family, Anatidae? Experts identify the number of bones the bird has in its neck. Ducks have 16 or fewer, while geese have between 17 and 24. Other differences include ducks with broader and longer beaks, geese typically larger, and ducks with more colorful plumage, especially males. 

For now, I must be patient. The Greater Scaup will return in October. In the meantime, I can look for the widespread Mallard found virtually on all bodies of water or search in California for breeding Gadwalls and Cinnamon Teals.

 

Gadwall
Gadwall

Photo Credit – National Audubon Society

 

 

Cinnamon Teal Pair Wading
Cinnamon Teal

Photo Credit – Ducks Unlimited
American Kestrel, Small Falcon with a Large Appetite

American Kestrel, Small Falcon with a Large Appetite

Eurasian or Common Kestrel: Photo Credit – Wikipedia   American Kestrel Photo Credit – Cornell Lab of Ornithology   Thank you, Sonoma Land Trust, for connecting me with the beautiful American Kestrel, the smallest raptor in North America, during a recent visit to the Sonoma 

Hummingbirds That Live In California

Hummingbirds That Live In California

Humming-bird Hawk-moth Photo Credit – Graeham Mounteney, Butterfly Conservation   Hummingbirds are small, often migratory birds that inhabit the Americas. They have compact bodies, long, narrow beaks, and relatively long blade-like wings. The latter allows them to fly in every direction and to hover. Typically, 

Belted Kingfisher: What You Need To Know

Belted Kingfisher: What You Need To Know

Belted Kingfisher

Photo Credit – I-naturalist (Birds of San Diego County)

 

I usually hear the Belted Kingfisher rather than see one when walking alongside the Corte Madera Creek near San Francisco. Occasionally, you might observe one perched above the water or hovering on rapidly beating wings. The Belted Kingfisher is a member of about 120 species worldwide, with the most prominent being the Kookaburra, native to Australia and New Guinea. Kingfishers have big heads, dagger bills, and tiny feet. Only the Belted Kingfisher and two other species are resident in the United States. Neither of the other two, the Green Kingfisher and the Ringed Kingfisher, is present in California. 

 

  

Green KingfisherGreen Kingfisher

Photo Credit – National Audubon Society 

 

 

Ringed KingfisherRinged Kingfisher

Photo Credit – National Audubon Society

 

The global population of the Belted Kingfisher is approximately two million, of which two-thirds inhabit North America. It is abundant and widespread near lakes, streams, and estuaries, and is of Least Concern under the United States classification of Birds of Conservation Concern.

 

 

Here is some information on kingfishers in general and Belted Kingfishers in particular:

  1. Belted Kingfishers appear as fossils in several southwestern states and date back at least 600,000 years. Fossils of other kingfisher species go back two million years.
  2.   

  3. Greek mythology explains the derivation of the name kingfisher: A time long ago, a happily married couple named Alcyone (Halcyon in Greek), daughter of Aeolus, God of the winds, and Ceyx, King of Trachis in central Greece, annoyed the God Zeus by comparing their marriage to his with Hera. Legend is that, in a fit of rage, he cast a thunderbolt at Alcyone’s husband’s ship as he was sailing his vessel to Ionia to consult the Oracle over his brother’s death. It sank and Ceyx perished. Hera was so profoundly saddened by the fate of Ceyx that she arranged for Morpheus, God of Apparitions, to create a life-like specter of Ceyx, revealing to Alcyone the circumstances of her husband’s death. Upset by what she saw, she threw herself into the sea and perished.
      
    The Gods of Olympia were so impressed by the couple’s devotion to each other that they had Zeus atone for his deed by transforming the couple into flashing blue Halcyon birds. Halcyon is the Greek word for kingfisher. The story ends with the Gods creating each January for two weeks, a calm and tranquil sea that allows Alcyone to lay her eggs and teach her chicks to fly. Hence, the word “halcyon” has become established in our vocabulary as meaning a happy and peaceful time. Our Greek species of kingfisher is the Eurasian or Common Kingfisher.
  4.  

    Painting by Herbert James Draper, 1915: “Halcyone”Painting by Herbert James Draper, 1915: “Halcyone”

      

  5. A kingfisher is supposed to have been a bird to have flown from Noah’s ark, receiving on its breast the orange of the setting sun and on its back, the blue of the sky.
  6.   

  7. My early days spotting kingfishers occurred in the 1950s, along the sides of the Ouse and River Nidd in Yorkshire. Presumably, these were the birds that originated in Greek mythology. They were known to me simply as the Kingfisher, Common Kingfisher, or the River Kingfisher. They were dumpy, short-tailed, about the size of a sparrow, and passed me by in a splash of blue as they moved fast and low over the water. My 1958 Bird List mentions this bird as observed in 1905, fishing among the ice on the Ouse. Most are resident birds except when there are prolonged freezing conditions in winter.
  8.   

     

    Common/Eurasian KingfisherCommon/Eurasian Kingfisher

    Photo Credit – Wikipedia

     

  9. The Belted Kingfisher belongs to a distinct group of kingfishers known as water kingfishers, sometimes hovering over the water before diving after their prey. The Kookaburra belongs to a sub-family known as tree kingfishers, and the Common or Eurasian kingfisher is a member of a third category known as river kingfishers. All species in the Americas are water kingfishers. Belted ones mainly eat fish in shallow water or swim near the surface. The bird is medium-sized, has a large, squarish head, dagger-shaped bill, shaggy crest, and blue and white plumage. Unlike many other birds the female is more brightly colored than the male and includes a rust-colored belly band.
  10.   

  11. The Belted Kingfisher builds its nest in tunnels. It has a flat toe with sharp, pointed claws that assist with the digging. Nests usually are excavated along a body of water, sloping upwards, and can be as long as eight feet. The clutch size is typically five to eight eggs, and both parents share in the incubation and feeding of the young. Sometimes, they host tenants in their tunnels. Swallows occasionally share their burrows, digging out small cavities. The pair will defend their territory against other kingfishers.
  12.   

    Belted Kingfisher, NestBelted Kingfisher, Nest

    Photo Credit – BirdNote

     

  13. And you are likely to hear Belted Kingfishers because of their three to four-second repeated chattering, a piercing rattle that they make when disturbed.
  14.   

  15. They wander widely and have appeared in the Galapagos Islands, Hawaii, the Azores, Iceland, Greenland, and occasionally in Europe, where they are usually “twitched” because of their rarity.
  16.   

  17. Some Native Americans believe that the kingfisher signals wealth, prosperity, and love for the one who sees it. The bird also features in native art.

 

Belted Kingfisher Native American Art

Belted Kingfisher Native American Art

Credit-Glen Rabena, Hornby Island, B.C.

It is a bird that I love to hear as much as to see.

Eurasian Collared Doves – Invaders or Colonizers?

Eurasian Collared Doves – Invaders or Colonizers?

Eurasian Collared Doves Photo Credit – Cornell Lab of Ornithology   Recently, I was walking alongside my local creek-side in Northern California when I heard the purring sound of goo-Goo-goo, and strove to find out what it was. I discovered a pair of Eurasian Collared 

Western Bluebirds, an Example of Natal Philopatry

Western Bluebirds, an Example of Natal Philopatry

Western Bluebirds Male & Female Photo Credit – National Geographic   The number of Western Bluebirds fluttering and dropping to the ground in search of insects appears to have dramatically increased this fall around the golf course I use here in northern California. What is 

Backyard Tales of a Black-headed Grosbeak and a Western Tanager

Backyard Tales of a Black-headed Grosbeak and a Western Tanager

Black-Headed Grosbeak

Photo Credit – Author

 

The fall migration is underway. There are birds appearing in my Northern California backyard which I have not identified before. First there was the Black-Headed Grosbeak, a member of the Cardinal family, inspecting my bird feeder, probably looking for its favorite seed, the sunflower, and then there was a terrible accident involving a Western Tanager. These are not rare birds in California, just unusual in my backyard.

 

Black-headed Grosbeak RangeBlack-Headed Grosbeak Range

Photo Credit – Wikipedia

 

The Black-Headed Grosbeak is a medium sized bird, about the size of a Starling, and is widespread and common in most parts of California, with its numbers appearing stable. It breeds as far north as southwest British Columbia. The average life span is approximately seven years. It chooses oak and mixed woodland for its summer habitat, but as it starts to migrate during September, to spend up to seven months wintering in central Mexico, it tends to choose open woodland, trees alongside streams, and suburban areas, as its preferred environment. 

  

Black-Headed Grosbeak male and femaleBlack-Headed Grosbeak, Both Sexes

Photo Credit – US National Park Service

 

The plumage of the male and female is somewhat different, but both genders possess a deep, conical beak, which gives the bird its name. The male has a black head, black speckled white back and tail, and an orangish neck, breast, and sides. The female is browner, with a whitish belly and streaking on the sides.

Their diet is mainly insects, snails, and spiders during summer, but they switch to seeds, berries, and fruit in winter. They are one of the few birds that eat monarch butterflies, despite the noxious chemicals these insects contain after eating milkweed during their larval stage. 

 

Spotted TowheeSpotted Towhee

Photo Credit – Sacramento Audubon Society

 

Beware of confusing the Black-Headed Grosbeak with a Spotted Towhee. The latter can be distinguished by its smaller bill and longer tail, and the orange coloring is restricted to its sides.

 

Evening GrosbeakEvening Grosbeak

Photo Credit – American Bird Conservancy

 

Blue GrosbeakBlue Grosbeak

Photo Credit – American Bird Conservancy

 

Rose-breasted GrosbeakRose-breasted Grosbeak

Photo Credit – American Bird Conservancy

 

There are other species of Grosbeak to be found in California, such as the Evening Grosbeak, so-named because, at first, it was thought only to sing at dusk, the Blue Grosbeak, and the occasional Pine Grosbeak, which is widespread across northern Europe and Asia as well as North America. The Rose-Breasted Grosbeak breeds primarily in the forests of the eastern United States, and winters in central and southern Mexico, the Caribbean, Central America, and northern South America.

 

Western TanagerWestern Tanager, Male and Female

Photo Credit – Rocky Mountain National Park Service

 

The Western Tanager that made it to my backyard unfortunately never left. It flew into a house window during the daytime, and died on impact. I hoped it was only stunned but that was not the case. I need to do something about my window! 

 

Western TanagerFatal Accident

Photo Credit – Author

 

Glass windows are worse than invisible. They either reflect foliage and the sky, or face off against another window, and appear not to exist. Up to an estimated one billion birds die annually from window strikes in the United States. I am considering what I should do. Should I place decals or stickers on the window despite its large size? The alternatives include installing shutters, using a mosquito screen or netting, adding a series of rope bird-savers, or inside, maybe I could add blinds, the simplest solution. 

                                                                                                                                                

Western Tanager Range MapWestern Tanager Range Map:

Photo Credit – Terry Sohl, NatureServe

 

Western Tanagers breed in the mountains of California, and as far north as Alaska, and winter in north-west Mexico, and as far south as central Costa Rica.  Despite their name, the species is a member of the Cardinal family. They eat insects, fruit, and berries. Males are readily recognized by their bright red head, lemon-yellow breast and back, and black wings, shoulders, and tail. Both sexes possess a relatively small, light-colored beak. They are a couple of inches shorter than an American Robin and slightly smaller than a Black-Headed Grosbeak. Their typical life span, excluding accidents, is around eight years.

I await the arrival of my next unusual species of bird. 

Owls of Marin

Owls of Marin

Barn Owls Photo Credit – Birds and Blooms   Someone from San Anselmo recently asked me about Owls in Marin, and expressed interest in installing an Owl Box. I believe Owl Boxes are available as part of the Hungry Owls Project sponsored by the WildCare 

Black-throated Gray Warbler in Yosemite Valley

Black-throated Gray Warbler in Yosemite Valley

Male Black-throated Gray Warbler (Photo Credit eBird)   During May this year, the Black-throated Gray Warbler made its way onto my birding “life list” as a result of a visit to Yosemite Valley. Not that these birds are rare in California ,but I had never 

The Legendary Hoopoe: A Pretty Bird with Poor Personal Hygiene

The Legendary Hoopoe: A Pretty Bird with Poor Personal Hygiene

Eurasian Hoopoe

(Photo Credit eBird)

 

I have just returned from a trip to Israel, a country that adopted the Hoopoe as its national bird in May 2008. I was fortunate enough to see one hunting for food on the lawns of HaPisga Gardens in Jaffe. My other notable birding event was in Jerusalem at the Nili and David Bird Observatory. Here birds were passing through Israel on their way to Europe, including Blackcaps, Redstarts, and an Olivaceous Warbler. Also caught in the mist net was a Lesser Whitethroat that had previously been ringed in Finland. More local birds observed included a Syrian Woodpecker, White-throated Kingfisher, and Hooded Crows.

 

 

BlackcapBlackcap

(Photo Credit: The Author)

 

 

The Hoopoe was selected to celebrate Israel’s 60th anniversary, and 155,000 people voted using a list of ten species. Its Hebrew name is “Duchifat”, and in Arabic this converts to the “Hudhud”. The Torah mentions the Hoopoe as “abhorrent and not to be eaten” because of its skunk-like stench, but Jewish legend praises the bird for introducing King Solomon to the Queen of Sheba. The Queen is believed to have ruled the “Land of Sabah” south of Israel, including Ethiopia, Somalia and Yemen. She and her subjects worshipped the sun and often invaded other lands. The Hoopoe was able to warn the King and enable a visit during which gifts were exchanged. The Queen eventually embraced the King’s religion, recognising God, and the King gave her “all that she desired, whatever she asked”. Despite the assertions of the Muslim faith that women should not lead, the Queen of Sheba was a powerful and successful leader recognized in the Qur’an.

 

  

Prophet SolomonProphet Sulaiman, King of the Jews

(Photo Credit Encyclopedia Britannica) 

 

 

Hoopoes are instantly recognized by their cinnamon-colored plumage, their attractive tall, erect crest of black-tipped feathers, and their black and white striped wings. In profile, they look similar to woodpeckers but their black bill is longer and thinner. They are medium-sized birds, about the size of a mourning dove, and their trisyllabic song of “oop-oop-oop” likely gave them their English name. An alternative explanation is that their name is derived from the French word “huppee” that means crested bird. They display an erratic butterfly-like undulating flight, half closing their broad, rounded wings, at the end of each beat.

 

 

Hoopoe 2022 Israeli Stamp2022 Israeli Stamp

(Photo Credit eBay)

 

 

This Eurasian species is present across most of Europe, Asia, and the northern half of Africa. There are two other species. The Madagascar Hoopoe is restricted to the island of Madagascar, and the African Hoopoe is found in southern Africa; neither of these species migrates unlike the Eurasian variety. The global population of the Eurasian Hoopoe is estimated at between five and ten million birds.

 

 

Hoopoe Range MapHoopoe Range Map

Orange: European Hoopoe – breeding; Dark Green: Eurasian Hoopoe – resident; Blue: Eurasian Hoopoe – wintering; Moss Green: Madagascar Hoopoe; Light Green: Africa Hoopoe.

(Photo Credit Wikpedia)

 

 

The Eurasian Hoopoe does not breed in the UK and I did not spot one during my childhood days of birdwatching in England. However, up to 100 birds appear during spring as they migrate from Africa to Europe, usually along the south coast of England. The species has two basic habitat requirements. It needs access to lightly vegetated open ground for feeding, and vertical structures, such as trees, walls, cliffs, and burrows, to provide cavities for its nests.

 

 

 

Hoopoe NestingHoopoe Nesting

(Photo Credit Dr. Shanthathamenan)

 

 

The Hoopoe’s reputation for abhorrence originates from the foul-smelling, thick brown liquid that is produced in the preening glands of brooding females. This is ejected from their posterior onto their feathers, and onto their eggs, to protect against predators and parasites. The secretion, which includes the unpleasant odor of dimethyl-sulphide, smells like rotting meat. Additionally, the Hoopoe allows litter and feces to build up in its nest that adds to the odor.  Even the chicks can squirt liquid feces in the direction of their suspected predators.  

During the breeding season, Hoopoes are territorial and will chase off intruders, sometimes stabbing them with their bill, and occasionally blinding the opponent. Clutch size averages around seven eggs, and incubation begins as soon as the first egg is laid. The male feeds the female during the incubation period.

 

 

Hoopoe NestHoopoe Chicks

(Photo Credit Francoise Vareille)

 

 

Until my visit to Israel, my sightings had only taken place during trips to Majorca, Spain, like the one I describe in chapter 10 of my novel She Wore a Yellow Dress. The Eurasian Hoopoe is absent from North America except for occasional vagrants that are seen in Alaska and the Canadian Yukon Territory. 

Finally, let me to finish with some more legends and myths attributed to the Eurasian Hoopoe:

  • Ancient Egypt: the Hoopoe was treated as sacred and a symbol of gratitude. Pictures of the bird adorn the walls of tombs and temples, and were used in iconography during the Age of the Pyramids (2700 to 2200 BC) to designate a child as heir and successor to his father. 

 

 

Tomb of Khnumhotep 11Tomb of Great Chief Khnumhotep

(Photo Credit Australian Center for Egyptology)

 

 

  • Ancient Persia: the Hoopoe was the symbol of virtue and the perfect messenger. Literature relates the meeting of King Solomon and the Queen of Sheba. There is also Iranian folklore that describes an uncovered bride combing her hair; her father-in-law sees her; she is ashamed, and flies away, with the comb in her hair, to become the Hoopoe. In Attar’s Logic of Birds, the bird is wise and the leader of all birds. 
  • Ancient Greece: the Hoopoe was the bird of good omens, and king of all the birds in the Greek comedy, The Birds.   
  • Turkey: the Hoopoe was treated as sacred and a symbol of loyalty and compassion.
  • Arab Countries: the Hoopoe is often regarded as a provider of medical remedies. It was believed that its heart cured diseases, and that its bones should be used for magical purposes. It also has the reputation of being able to locate water underground. 
  • Elsewhere in Europe: the Hoopoe has a mixed reputation. In France, hearing its song before the vines blossom, is a sign of a plentiful harvest and good wine. To the Vikings, the presence of the Hoopoe was a harbinger of war; in Estonia, its song was supposed to foreshadow death, and in other places it was considered a thief.

Whether or not you accept these beliefs, the Eurasian Hoopoe is a species that has had a lasting impact on human civilizations. Thanks to its adaptation and defensive skills, there is little worry about its future survival. It continues to be listed as of “Least concern” from a conservation point of view.

 

 

The Wise HoopoeThe Wise Hoopoe, King Solomon’s Personal Messenger 

(Photo Credit Santa Monica Bay Audubon Society)

 

 

As Thin As A Ridgway’s Rail

As Thin As A Ridgway’s Rail

Ridgway’s Rail (Photo Credit eBird)   Some people hold the opinion that the saying “As Thin as a Rail” derives from a comparison with the skinny and slender shape of birds known as Rails, including the Ridgway’s Rail. Many of these species have laterally compressed 

Attacked by Swans

Attacked by Swans

Mute Swan Photo Credit: Wikipedia I was surprised recently to see two pairs of Mute Swans feeding on grass and submerged vegetation at Schollenberger Park, Petaluma, CA. They appeared to be partners and presumably were preparing to breed in March or April. As we passed 

Buffleheads: Ducks that Nest in Trees

Buffleheads: Ducks that Nest in Trees

 

It is the start of winter here in Northern California, and a time when tiny Buffleheads, the smallest ducks in North America, arrive to spend their non-breeding season in the state. They are one of 29 duck species in North America and tend to return punctually each year to the same location. Whether I am walking the dog or doing some serious birdwatching, these black-and-white ducks appear in small groups or in pairs, and sometimes individually, on sheltered estuarine waters along the Pacific coast, such as the lower reaches of the Corte Madera Creek. 

When disturbed, they take flight, sometimes by running a short distance on the surface of the water, but unlike other diving ducks, they can also lift off directly, when they choose. They fly fast and low over the water with rapid wingbeats, and are silent in flight, making no whistling or quacking noise. They can travel at up to 48 miles (77 km) per hour during migration. While on the water, they dive for their diet of mainly aquatic insects, crustaceans, and mollusks, and you can see them leap slightly forward and then plunge below the surface of the water. They usually remain underwater for up to 20 seconds, but sometimes stay submerged for over a minute, popping up far away from where they disappeared. I have yet to see one on dry land.

 

Buffleheads in Flight

Buffleheads in Flight

Buffleheads are bestowed with a large, high-crowned head which is the reason for their name, first being called “bull-headed” using an ancient Greek word, and then this description became “Buffalo Head”, and eventually was shortened to “Bufflehead”. Buffleheads also attract the nickname of “butterball”, a reference to the large amount of fat they carry during migration, and in some places they are known as ”the chickadee of the duck world” because of their small size. The species is native to North America where its current population is around 1.3 million, and this number is believed to be increasing. 

 

Buffleheads Range Map

Bufflehead Range Map in North America

Buffleheads are rarely seen outside of North America, although individual birds occasionally show up in adjacent countries such as Japan, Greenland, and Iceland, and in parts of Europe, where they are considered a very rare migrant. The Bufflehead is mentioned in the Bird Book I used in England during my 1960s birdwatching, but says that the presence of these birds in Britain is “Accidental”. Indeed, as recently as 2016, only a cumulative total of 17 individual Buffleheads had been recorded in the UK since the species initially appeared during 1920. Most sightings are recorded in the Midlands of England, rather than close to the west coast, and that has led to speculation that some of these birds may be escaped ornamental ducks. As far as I know, none have been recorded at Spurn Point on the east coast of Yorkshire, my favorite bird watching haunt during the 1960s, and just one elsewhere in the county. The opportunities for birdwatching during the 1960s at Spurn Point are described in my memoir-style novel titled She Wore a Yellow Dress. 

Buffleheads are only 14 inches (35 cm) long, compared with the Mallard’s 23 inches (58 cm). The adult male is the most colorful, with a large white patch behind its eye and around the back of its head. Otherwise, the rest of the head and back are black with a green and purple sheen. The underbelly is entirely white, making it highly distinctive on the water. In contrast, females are generally gray below and brown above, with a characteristic white patch on the side of their head. 

Buffleheads are monogamous and can mate for life. However, since their average life span is only around 2.5 years, having a partner for life may not be too difficult. Their migration north for breeding purposes starts during February when they fly under the cover of darkness to avoid predators. Ninety percent of the breeding population is believed to be dispersed westward from Manitoba in Canada, with a few non-breeding birds staying behind for summer, as far south as California.  The return trip begins once their summer habitat begins to freeze over. Those nesting in eastern Alberta typically migrate to the eastern United States and the Gulf Coast of Mexico, and birds from western Canada migrate south along the Pacific Flyway. 

There is always a risk of confusing the identification of Buffleheads with other species of diving duck. For example, a male Bufflehead may be confused with a Hooded Merganser as both birds possess similar large white patches on the back of their heads and catch their food in a similar manner. However, they are not related, and while the male Bufflehead is white on its lower half, the Merganser is brown. Also, the Merganser has a thin bill to catch fish whereas the Bufflehead’s bill is more duck-like.

 

Hooded Mergansers

Pair of Hooded Mergansers

Ducks that dabble for food on the surface of the water by tipping their bodies upside down should not be confused with Buffleheads because of this feeding behavior. Such species include Mallards, Shovelers, Wigeon, Teal, Gadwalls, and Pintails. 

Scaup ducks that dive to feed are similar in that they display white flanks but are distinguishable because they have no white patch on their head and are much larger than Buffleheads (close to the size of a Mallard).  

 

lesser scaup duck

Lesser Scaup – Male

There may be confusion with two other species of diving duck, called the Common Goldeneye and the Barrow’s Goldeneye, that are named after their brilliant yellow eyes, surrounded by black in the case of males, and deep brown for females. This possible mistake in identification is due to the white underbelly of the male Goldeneye, the iridescent green on its head, and the white patch on the male’s face. The Common Goldeneye is found widely across the US and Canada, whereas the Barrow’s species is restricted to the northwest and far northeast of North America.

 

Common goldeneye

Common Goldeneye

 

Barrow's Goldeneye

Barrow’s Goldeneye

 

Common Goldeneye Range Map

Common Goldeneye Range Map

It is also these three species of duck that compete with Buffleheads for the best cavities and hollows in trees to be used as nesting sites, despite the physical limitations of webbed feet and the preference of ducks to feed on ponds, lakes, rivers, and along seacoasts. Another possible competitor for tree cavities is the Wood Duck but its breeding territory is largely in the United States, and therefore south of the territory in which Buffleheads nest.

 

Wood Ducks

Wood Ducks – Male and Female

 

Wood Duck Range Map

Wood Duck Range Map

The Bufflehead appears to prefer cavities in aspen and poplar trees, although it will use holes in Douglas firs, ponderosa pines, and black cottonwoods. Holes excavated by Northern Flickers appear as the duck’s first choice since these cavities are small and deep enough to provide security and prevent the larger Goldeneye duck from taking over, to the extent that they will kill the Bufflehead occupant if they have to. Females select the nesting cavity that is usually located two (60 cm) to ten feet (300 cm) above the ground so that the ducklings can safely leap and fall to the ground a couple of days after hatching. An average of nine cream to buff-colored eggs are laid and incubated by the female. The male takes this time off to molt. 

Goldeneyes and mergansers are less choosy with their nesting sites, and will include rock openings, abandoned buildings, open tops of tree stumps, and nest boxes, as suitable sites. Cavities constructed by pileated woodpeckers apparently are preferred by Goldeneyes.

 

Buffleheads: A female at nest

Bufflehead female at nest

As for conservation, Bufflehead numbers are not in decline despite 200,000 to 250,000 being shot each year in the United States and Canada by hunters. As long as deforestation is controlled, the species should continue to flourish and remain of “least concern” from a conservancy perspective. Who knows, maybe the Bufflehead will continue to adapt to using human-provided nesting boxes or convert to the more traditional nesting methods employed by other species of duck, if tree cavities become hard to find.