Bird on the horizon sittin’ on a fence... He’s singin’ his song for me at his own expense
Saturday, December 21, 2013
Herring Gull
Spiraling above a fishing boat or squabbling at a dock or parking lot, Herring Gulls are the quintessential gray-and-white, pink-legged "seagulls." They're the most familiar gulls of the North Atlantic and can be found across much of coastal North America in winter. A variety of plumages worn in their first four years can make identification tricky—so begin by learning to recognize their beefy size and shape.
Herring Gulls prefer drinking freshwater, but they'll drink seawater when they must. Special glands located over the eyes allow them to excrete the salt that would otherwise dehydrate most animals, including us. The salty excretion can be seen dripping out of their nostrils and off the ends of their bills. Young Herring Gulls appear to be more migratory than adults. In some areas, such as the Great Lakes, most adults remain near their breeding grounds, but the nonbreeders move father south in the fall. Breeding brings special dietary challenges for Herring Gulls. During courtship, males feed their mates, losing fat reserves in the process. Then egg-laying reduces the females’ protein and bone calcium, and they seek out marine invertebrates and fish to replenish stores. After chicks hatch, both parents feed them day and night for up to 12 weeks, splitting foraging shifts to offer each chick up to half a pound of food per day as it nears fledging.
Saturday, December 14, 2013
Brewer's Blackbird
A bird to be seen in the full sun, the male Brewer’s Blackbird is a glossy, almost liquid combination of black, midnight blue, and metallic green. Females are a staid brown, without the male’s bright eye or the female Red-winged Blackbird’s streaks. Common in towns and open habitats of much of the West, you’ll see these long-legged, ground-foraging birds on sidewalks and city parks as well as chuckling in flocks atop shrubs, trees, and reeds.
Brewer’s Blackbirds are social birds that nest in colonies of up to 100 birds. The first females to arrive choose a nest site to suit them, and later arrivals follow suit. Eggs are extremely variable in color and pattern. Some studies suggest the variability helps the eggs match the background pattern of the nest, helping to camouflage them. Most birds fly south for the winter, but a small number of Brewer’s Blackbirds fly west – leaving the frigid Canadian prairies for the milder coastal regions of British Columbia and Washington. Brewer’s Blackbirds cope well with humans and the development we bring. In the last century, they spread eastward from western Minnesota, taking advantage of agricultural fields, farmhouses, and towns. Where they overlap with the Common Grackle, the grackles take the streets and suburbs, leaving the Brewer’s Blackbirds to the fields and grasslands
Rusty Blackbird
Rusty Blackbird is one of North America’s most rapidly declining species. The population has plunged an estimated 85-99 percent over the past forty years and scientists are completely puzzled as to what is the cause. They are relatively uncommon denizens of wooded swamps, breeding in the boreal forest and wintering in the eastern U.S. In winter, they travel in small flocks and are identified by their distinctive rusty featheredges and pallid yellow eyes.
Like most members of the blackbird family, the Rusty Blackbird undergoes only one molt per year. The change in appearance between winter and summer results from the rust-colored feather tips of "winter plumage" wearing off and leaving behind the smooth black or gray "breeding plumage." The Rusty Blackbird feeds mostly on insects and plant matter, but it sometimes attacks and eats other birds. It has been documented feeding on sparrows, robins, and snipe, among others.
Dark-eyed Junco
Dark-eyed Juncos are neat, even flashy little sparrows that flit about forest floors of the western mountains and Canada, then flood the rest of North America for winter. They’re easy to recognize by their crisp (though extremely variable) markings and the bright white tail feathers they habitually flash in flight. One of the most abundant forest birds of North America, you’ll see juncos on woodland walks as well as in flocks at your feeders or on the ground beneath them.
Juncos are the "snowbirds" of the middle latitudes. Over most of the eastern United States, they appear as winter sets in and then retreat northward each spring. Some juncos in the Appalachian Mountains remain there all year round, breeding at the higher elevations. These residents have shorter wings than the migrants that join them each winter. Longer wings are better suited to flying long distances, a pattern commonly noted among other studies of migratory vs. resident species. The Dark-eyed Junco is one of the most common birds in North America and can be found across the continent, from Alaska to Mexico, from California to New York. A recent estimate set the junco’s total population at approximately 630 million individuals.
White-crowned Sparrow
White-crowned Sparrows appear each winter over much of North America to grace our gardens and favorite trails (they live in parts of the West year-round). The smart black-and-white head, pale beak, and crisp gray breast combine for a dashing look – and make it one of the surest sparrow identifications in North America. Watch for flocks of these sparrows scurrying through brushy borders and overgrown fields, or coax them into the open with backyard feeders. As spring approaches, listen out for this bird’s thin, sweet whistle.
White-throated Sparrow
Crisp facial markings make the White-throated Sparrow an attractive bird as well as a hopping, flying anatomy lesson. There’s the black eyestripe, the white crown and supercilium, the yellow lores, the white throat bordered by a black whisker, or malar stripe. They’re also a great entrée into the world of birdsong, with their pretty, wavering whistle ofOh-sweet-canada. These forest sparrows breed mostly across Canada, but they’re familiar winter birds across most of eastern and southern North America and California.
Although they look nothing alike and aren’t particularly closely related, the White-throated Sparrow and the Dark-eyed Junco occasionally mate and produce hybrids. The resulting offspring look like grayish, dully marked White-throated Sparrows with white outer tail feathers. White-throated Sparrows typically nest on or near the ground. Occasional nests are built up to 15 feet off the ground in conifers. Usually, these nests are second attempts after a pair has had a ground nest robbed by a predator.
Swamp Sparrow
Vesper Sparrow
A large sparrow, the Vesper Sparrow inhabits grasslands and fields across much of the north-central United States and Canada. As its name suggests, it often sings in the evening twilight, though it sings actively in early morning as well.
Savannah Sparrow
Not all streaky brown birds are impossible to identify: Take a closer look at this one and you’ll see an understated but distinctive sparrow with a short tail, small head, and telltale yellow spot before the eye. Savannah Sparrows are one of the most numerous songbirds in North America, and while sometimes overlooked, are likely visitors across the continent. In summer, they don’t hesitate to advertise their location, belting out a loud, insect-like song from farm fields and grasslands.
The Savannah Sparrow’s name sounds like a nod to its fondness for grassy areas, but this species was actually named by famed nineteenth century ornithologist Alexander Wilson for a specimen collected in Savannah, Georgia. Raising young is hard work: a female Savannah Sparrow must gather 10 times her weight in food to feed herself and her young during the 8 days they are in the nest.
Ruby-crowned Kinglet
This photo was taken January 18th in Tennessee. A tiny bird seemingly overflowing with energy, the Ruby-crowned Kinglet forages almost frantically through lower branches of shrubs and trees. Its habit of constantly flicking its wings is a key identification clue. Smaller than a warbler or chickadee, this plain green-gray bird has a white eyering and a white bar on the wing. Alas, the male’s brilliant ruby crown patch usually stays hidden—your best chance to see it is to find an excited male singing in spring or summer.
The Ruby-crowned Kinglet is a tiny bird that lays a very large clutch of eggs—there can be up to 12 in a single nest. Although the eggs themselves weigh only about a fiftieth of an ounce, an entire clutch can weigh as much as the female herself.
Brown Creeper
This photo was taken January 18th in Tennessee. Brown Creepers are tiny woodland birds with an affinity for the biggest trees they can find. Look for these little, long-tailed scraps of brown and white spiraling up stout trunks and main branches, sometimes passing downward-facing nuthatches along the way. They probe into crevices and pick at loose bark with their slender, downcurved bills, and build their hammock-shaped nests behind peeling flakes of bark. Their piercing calls can make it much easier to find this hard-to-see but common species.
The naturalist W.M. Tyler, writing in 1948, captured this species’ energy and fragility in a memorable description, “The Brown Creeper, as he hitches along the bole of a tree, looks like a fragment of detached bark that is defying the law of gravitation by moving upward over the trunk, and as he flies off to another tree he resembles a little dry leaf blown about by the wind.” The Brown Creeper builds a hammock-like nest behind a loosened flap of bark on a dead or dying tree. It wasn’t until 1879 that naturalists discovered this unique nesting strategy. In Arizona, Brown Creeper nests often have two openings, one which serves as an entrance and the other as an exit. Entrances face downward and exits upward.
Ring-necked Duck
This photo was taken January 26th 2014. The male Ring-necked Duck is a sharply marked bird of gleaming black, gray, and white. Females are rich brown with a delicate face pattern. At distance, look for this species’ distinctive, peaked head to help you identify it. Even though this species dives for its food, you can find it in shallow wetlands such as beaver swamps, ponds, and bays. Of all the diving duck species, the Ring-necked Duck is most likely to drop into small ponds during migration.
This bird’s common name (and its scientific name "collaris," too) refer to the Ring-necked Duck's hard-to-see chestnut collar on its black neck. It’s not a good field mark to use for identifying the bird, but it jumped out to the nineteenth century biologists that described the species using dead specimens. During fall migration, Ring-necked Ducks can form immense flocks. Several hundred thousand congregate each fall on certain lakes in Minnesota to feed on wild rice.
Redhead
An aptly named diving duck, the Redhead can be easily identified by its bright red head and gray back. Many female Redheads make no nests of their own, but instead lay their eggs in the nests of other ducks.
Northern Harrier
Northern Harriers are the most owl-like of hawks (though they’re not related to owls). They rely on hearing as well as vision to capture prey. The disk-shaped face looks and functions much like an owl’s, with stiff facial feathers helping to direct sound to the ears. Juvenile males have pale greenish-yellow eyes, while juvenile females have dark chocolate brown eyes. The eye color of both sexes changes gradually to lemon yellow by the time they reach adulthood. Male Northern Harriers can have as many as five mates at once, though most have only one or two. The male provides most of the food for his mates and their offspring, while the females incubate the eggs and brood the chicks. The oldest Northern Harrier on record was 15 years, 4 months old when it was captured and released in 2001 by a bird bander in Quebec.
Green-winged Teal
We witnessed a Green-winged Teal while participating at the Christmas Bird Count. We saw it through a spotting scope about 100 yards way wading in a marshy pond. It was a great sight but to far away to snap a picture of it.
Saturday, December 7, 2013
Cedar Waxwing
This picture was taken that the University of Alabama's Arboretum of February 9th. A treat to find in your binocular viewfield, the Cedar Waxwing is a silky, shiny collection of brown, gray, and lemon-yellow, accented with a subdued crest, rakish black mask, and brilliant-red wax droplets on the wing feathers. In fall these birds gather by the hundreds to eat berries, filling the air with their high, thin, whistles. In summer you’re as likely to find them flitting about over rivers in pursuit of flying insects, where they show off dazzling aeronautics for a forest bird.
Cedar Waxwings with orange instead of yellow tail tips began appearing in the northeastern U.S. and southeastern Canada in the 1960s. The orange color is the result of a red pigment picked up from the berries of an introduced species of honeysuckle. If a waxwing eats enough of the berries while it is growing a tail feather, the tip of the feather will be orange. The Cedar Waxwing is one of the few North American birds that specializes in eating fruit. It can survive on fruit alone for several months. Brown-headed Cowbirds that are raised in Cedar Waxwing nests typically don’t survive, in part because the cowbird chicks can’t develop on such a high-fruit diet. Because they eat so much fruit, Cedar Waxwings occasionally become intoxicated or even die when they run across overripe berries that have started to ferment and produce alcohol.
Saturday, November 30, 2013
Pied-billed Grebe
A small diving bird with a chicken-like bill, the Pied-billed Grebe is common on lakes and ponds across North America. It is rarely seen flying and prefers to sink out of sight when danger threatens.
Although it swims like a duck, the Pied-billed Grebe does not have webbed feet. Instead of having a webbing connecting all the toes, each toe has lobes extending out on the sides that provide extra surface area for paddling.
Chinese Goose
The Chinese Goose is a breed of domesticated goose descended from the wild swan goose. Chinese geese differ from the wild birds in much larger size (up to 5–10 kg in males, 4–9 kg in females), and in having an often strongly developed basal knob on the upper side of the bill. The knob at the top of the beak is more prominent on males than females.
Yellow-rumped Warbler.
Yellow-rumped Warblers are impressive in the sheer numbers with which they flood the continent each fall. Shrubs and trees fill with the streaky brown-and-yellow birds and their distinctive, sharp chips. Though the color palette is subdued all winter, you owe it to yourself to seek these birds out on their spring migration or on their breeding grounds. Spring molt brings a transformation, leaving them a dazzling mix of bright yellow, charcoal gray and black, and bold white.
The Yellow-rumped Warbler is the only warbler able to digest the waxes found in bayberries and wax myrtles. Its ability to use these fruits allows it to winter farther north than other warblers, sometimes as far north as Newfoundland.
Monday, November 25, 2013
Common Loon
The eerie calls of Common Loons echo across clear lakes of the northern wilderness. Summer adults are regally patterned in black and white. In winter, they are plain gray above and white below, and you’ll find them close to shore on most seacoasts and a good many inland reservoirs and lakes. Common Loons are powerful, agile divers that catch small fish in fast underwater chases. They are less suited to land, and typically come ashore only to nest.
The Common Loon swims underwater to catch fish, propelling itself with its feet. It swallows most of its prey underwater. The loon has sharp, rearward-pointing projections on the roof of its mouth and tongue that help it keep a firm hold on slippery fish. Loons are agile swimmers, but they move pretty fast in the air, too. Migrating loons have been clocked flying at speeds more than 70 mph. A hungry loon family can put away a lot of fish. Biologists estimate that loon parents and their 2 chicks can eat about a half-ton of fish over a 15-week period. Loons are well equipped for their submarine maneuvers to catch fish. Unlike most birds, loons have solid bones that make them less buoyant and better at diving. They can quickly blow air out of their lungs and flatten their feathers to expel air within their plumage, so they can dive quickly and swim fast underwater. Once below the surface, the loon’s heart slows down to conserve oxygen.
Hooded Merganser
This beauty was witnessed along the coast of the Cooper river in a brisk early morning a few days before Thanksgiving. “Hooded” is something of an understatement for this extravagantly crested little duck. Adult males are a sight to behold, with sharp black-and-white patterns set off by chestnut flanks. Females get their own distinctive elegance from their cinnamon crest. Hooded Mergansers are fairly common on small ponds and rivers, where they dive for fish, crayfish, and other food, seizing it in their thin, serrated bills.
Along with Wood Ducks and other cavity-nesting ducks, Hooded Mergansers often lay their eggs in other females’ nests. This is called “brood parasitism” and is similar to the practice of Brown-headed Cowbirds, except that the ducks only lay eggs in nests of their own species. Female Hooded Mergansers can lay up to about 13 eggs in a clutch, but nests have been found with up to 44 eggs in them. Hooded Mergansers find their prey underwater by sight. They can actually change the refractive properties of their eyes to improve their underwater vision. In addition, they have an extra eyelid, called a “nictitating membrane,” which is transparent and helps protect the eye during swimming, like a pair of goggles. Hooded Merganser ducklings leave their nest cavity within 24 hours of hatching. First, their mother checks the area around the nest and calls to the nestlings from ground level. From inside the nest, the little fluffballs scramble up to the entrance hole and then flutter to the ground, which may be 50 feet or more below them. In some cases they have to walk half a mile or more with their mother to the nearest body of water.
Sunday, November 10, 2013
American Wigeon
A common and increasingly abundant duck, the American Wigeon breeds in northwestern North America and is found throughout the rest of the continent in migration and in winter. Its small bill and the male's white forehead, as well as certain aspects of nesting and feeding behavior, distinguish this species from other dabbling ducks.
The American Wigeon was formerly known as "Baldpate" because the white stripe resembled a bald man's head. The American Wigeon is a rare, but regular straggler to Europe where it turns up in flocks of Eurasian Wigeon. The American Wigeon's short bill enables it to exert more force at the bill tip than other dabbling ducks, thus permitting efficient dislodging and plucking of vegetation.
Eastern Meadowlark
The sweet, lazy whistles of Eastern Meadowlarks waft over summer grasslands and farms in eastern North America. The birds themselves sing from fenceposts and telephone lines or stalk through the grasses, probing the ground for insects with their long, sharp bills. On the ground, their brown-and-black dappled upperparts camouflage the birds among dirt clods and dry grasses. But up on perches, they reveal bright-yellow underparts and a striking black chevron across the chest.
A male Eastern Meadowlark typically has two mates at a time, rarely three. Where Eastern and Western meadowlark ranges overlap in the central U.S., the two species refuse to share territories. Their songs sound totally different to each other, like a foreign language, so singing doesn’t always do the job of communicating territorial boundaries. Instead, the two species are likely to fight for territorial supremacy.
Saturday, November 9, 2013
Golden-crowned Kinglet
Golden-crowned Kinglets are boldly marked with a black eyebrow stripe and flashy lemon-yellow crest. A good look can require some patience, as they spend much of their time high up in dense spruce or fir foliage. To find them, listen for their high, thin call notes and song. Though barely larger than a hummingbird, this frenetically active bird can survive –40 degree nights, sometimes huddling together for warmth. They breed in the far north and montane west and visit most of North America during winter.
The Golden-crowned Kinglet usually raises two large broods of young, despite the short nesting season of the northern boreal forest. The female feeds her first brood only up until the day after they leave the nest. She then starts laying the second set of eggs while the male takes care of the first brood. The male manages to feed eight or nine nestlings himself, and he occasionally feeds the incubating female too. Each of the Golden-crowned Kinglet's nostrils is covered by a single, tiny feather.
Wednesday, November 6, 2013
Yellow-bellied Sapsucker
On a walk through the forest you might spot rows of shallow holes in tree bark. In the East, this is the work of the Yellow-bellied Sapsucker, an enterprising woodpecker that laps up the leaking sap and any trapped insects with its specialized, brush-tipped tongue. Attired sharply in barred black-and-white, with a red cap and (in males) throat, they sit still on tree trunks for long intervals while feeding. To find one, listen for their loud mewing calls or stuttered drumming.
The Yellow-bellied Sapsucker makes two kinds of holes in trees to harvest sap. Round holes extend deep in the tree and are not enlarged. The sapsucker inserts its bill into the hole to probe for sap. Rectangular holes are shallower, and must be maintained continually for the sap to flow. The sapsucker licks the sap from these holes, and eats the cambium of the tree too. New holes usually are made in a line with old holes, or in a new line above the old. The sapwells made by Yellow-bellied Sapsuckers attract hummingbirds, which also feed off the sap flowing from the tree. In some parts of Canada, Ruby-throated Hummingbirds rely so much on sapwells that they time their spring migration with the arrival of sapsuckers. Other birds as well as bats and porcupines also visit sapsucker sapwells. Yellow-bellied Sapsuckers have been found drilling sapwells in more than 1,000 species of trees and woody plants, though they have a strong preference for birches and maples. The Yellow-bellied Sapsucker is the only woodpecker in eastern North America that is completely migratory. Although a few individuals remain throughout much of the winter in the southern part of the breeding range, most head farther south, going as far south as Panama. Females tend to migrate farther south than do males.
Sunday, November 3, 2013
Bald Eagle
The Bald Eagle has been the national emblem of the United States since 1782 and a spiritual symbol for native people for far longer than that. These regal birds aren’t really bald, but their white-feathered heads gleam in contrast to their chocolate-brown body and wings. Look for them soaring in solitude, chasing other birds for their food, or gathering by the hundreds in winter. Once endangered by hunting and pesticides, Bald Eagles have flourished under protection.
Rather than do their own fishing, Bald Eagles often go after other creatures’ catches. A Bald Eagle will harass a hunting Osprey until the smaller raptor drops its prey in midair, where the eagle swoops it up. A Bald Eagle may even snatch a fish directly out of an Osprey’s talons. Fishing mammals (even people sometimes) can also lose prey to Bald Eagle piracy. Had Benjamin Franklin prevailed, the U.S. emblem might have been the Wild Turkey. In 1784, Franklin disparaged the national bird’s thieving tendencies and its vulnerability to harassment by small birds. "For my own part,” he wrote, “I wish the Bald Eagle had not been chosen the Representative of our Country. He is a Bird of bad moral Character. He does not get his Living honestly. … Besides he is a rank Coward: The little King Bird not bigger than a Sparrow attacks him boldly and drives him out of the District.” Sometimes even the national bird has to cut loose. Bald Eagles have been known to play with plastic bottles and other objects pressed into service as toys. One observer witnessed six Bald Eagles passing sticks to each other in midair. The largest Bald Eagle nest on record, in St. Petersburg, Florida, was 2.9 meters in diameter and 6.1 meters tall. Another famous nest—in Vermilion, Ohio—was shaped like a wine glass and weighed almost two metric tons. It was used for 34 years until the tree blew down.
Sharp-shinned Hawk
A tiny hawk that appears in a blur of motion—and often disappears in a flurry of feathers. That’s the Sharp-shinned Hawk, the smallest hawk in North America and a daring, acrobatic flier. These raptors have distinctive proportions: long legs, short wings, and very long tails, which they use for navigating their deep-woods homes at top speed in pursuit of songbirds and mice. They’re easiest to spot in fall on their southward migration, or occasionally at winter feeders.
Sharp-shinned Hawks migrate south out of Canada in the fall and are observed at hawk watches in very large numbers. The hawks follow similar landscape features and often are concentrated in certain areas. More than 11,000 Sharp-shinned Hawks were seen on one October day at Cape May Point, New Jersey. Female Sharp-shinned Hawks are about a third bigger and heavier than males. This is a typical pattern for many hawks and owls, but otherwise rare in the bird world. Sharp-shinned Hawks carry their prey to a stump or low branch to pluck it before eating. Swallowing feathers is not normal for them, as it is for owls.
American Kestrel
North America’s littlest falcon, the American Kestrel packs a predator’s fierce intensity into its small body. It's one of the most colorful of all raptors: the male’s slate-blue head and wings contrast elegantly with his rusty-red back and tail; the female has the same warm reddish on her wings, back, and tail. Hunting for insects and other small prey in open territory, kestrels perch on wires or poles, or hover facing into the wind, flapping and adjusting their long tails to stay in place. Kestrels are declining in parts of their range; you can help them by putting up nest boxes.
Sports fans in some cities get an extra show during night games: kestrels perching on light standards or foul poles, tracking moths and other insects in the powerful stadium light beams and catching these snacks on the wing. Some of their hunting flights have even made it onto TV sports coverage. When nature calls, nestling kestrels back up, raise their tails, and squirt feces onto the walls of the nest cavity. The feces dry on the cavity walls and stay off the nestlings. The nest gets to be a smelly place, with feces on the walls and uneaten parts of small animals on the floor. It can be tough being one of the smallest birds of prey. Despite their fierce lifestyle, American Kestrels end up as prey for larger birds such as Northern Goshawks, Red-tailed Hawks, Barn Owls, American Crows, and Sharp-shinned and Cooper’s Hawks, as well as rat snakes, corn snakes, and even fire ants. Unlike humans, birds can see ultraviolet light. This enables kestrels to make out the trails of urine that voles, a common prey mammal, leave as they run along the ground. Like neon diner signs, these bright paths may highlight the way to a meal—as has been observed in the Eurasian Kestrel, a close relative.
American Avocet
With its elegant profile and striking coloration, the American Avocet is unique among North American birds. In summer it can be found in temporary and unpredictable wetlands across western North America where it swings its long upturned bill through the shallow water to catch small invertebrates.
In response to predators, the American Avocet sometimes issues a series of call notes that gradually changes pitch, simulating the Doppler effect and thus making its approach seem faster than it actually is. Nesting American Avocets aggressively attack predators, sometimes physically striking Northern Harriers or Common Ravens. American Avocet chicks leave the nest within 24 hours after hatching. Day-old avocets can walk, swim, and even dive to escape predators.
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