Bird on the horizon sittin’ on a fence... He’s singin’ his song for me at his own expense
Monday, March 31, 2014
Black-billed Magpie
Black-billed Magpies are familiar and entertaining birds of western North America. They sit on fenceposts and road signs or flap across rangelands, their white wing patches flashing and their very long tails trailing behind them. This large, flashy relative of jays and crows is a social creature, gathering in numbers to feed at carrion. They’re also vocal birds and keep up a regular stream of raucous or querulous calls.
Historical records of the American West indicate that Black-billed Magpies have been associates of people for a long time. Magpies frequently followed hunting parties of Plains Indians and fed on leftovers from bison kills. On their expedition, Lewis and Clark reported magpies boldly entering their tents to steal food. The Black-billed Magpie makes a very large nest that can take up to 40 days to construct. It's a lot of work, but a study found that it only used about 1% of the daily energy expenditure of the pair. Laying eggs, on the other hand, takes 23% of the female's daily energy budget.
Steller's Jay
A large, dark jay of evergreen forests in the mountainous West. Steller’s Jays are common in forest wildernesses but are also fixtures of campgrounds, parklands, and backyards, where they are quick to spy bird feeders as well as unattended picnic items. When patrolling the woods, Steller’s Jays stick to the high canopy, but you’ll hear their harsh, scolding calls if they’re nearby. Graceful and almost lazy in flight, they fly with long swoops on their broad, rounded wings.
Steller's and Blue jays are the only North American jays with crests. The Blue Jay is expanding its range westward. Where they meet, the two species occasionally interbreed and produce hybrids. Steller’s Jays have the dubious honor of being one of the most frequently misspelled names in all of bird watching. Up close, the bird’s dazzling mix of azure and blue is certainly stellar, but that’s not how you spell their name. Steller’s Jays were discovered on an Alaskan island in 1741 by Georg Steller, a naturalist on a Russian explorer’s ship. When a scientist officially described the species, in 1788, they named it after him – along with other discoveries including the Steller’s sea lion and Steller’s Sea-Eagle. The Steller's Jay and the Blue Jay are the only New World jays that use mud to build their nests. An excellent mimic with a large repertoire, the Steller’s Jay can imitate birds, squirrels, cats, dogs, chickens, and some mechanical objects.
Sunday, March 30, 2014
Ruddy Duck
Ruddy Ducks are compact, thick-necked waterfowl with seemingly oversized tails that they habitually hold upright. Breeding males are almost cartoonishly bold, with a sky-blue bill, shining white cheek patch, and gleaming chestnut body. They court females by beating their bill against their neck hard enough to create a swirl of bubbles in the water. This widespread duck breeds mostly in the prairie pothole region of North America and winters in wetlands throughout the U.S. and Mexico.
The bright colors and odd behavior of male Ruddy Ducks drew attention from early naturalists, though they didn’t pull any punches. One 1926 account states, “Its intimate habits, its stupidity, its curious nesting customs and ludicrous courtship performance place it in a niche by itself…. Everything about this bird is interesting to the naturalist, but almost nothing about it is interesting to the sportsman.” Though Ruddy Ducks are native to the Americas, one population became established in England after captive ducks escaped in 1952. This population grew to about 3,500 individuals by 1992, and now appears to be expanding into the Netherlands, France, Belgium, and Spain.
Blue-winged Teal
Pairs and small groups of this tiny dabbling duck inhabit shallow ponds and wetlands across much of North America. Blue-winged Teal are long distance migrants, with some birds heading all the way to South America for the winter. Therefore, they take off early on spring and fall migration, leaving their breeding grounds in the United States and Canada well before other species in the fall.
The Blue-winged Teal is among the latest ducks to migrate northward in spring, and one of the first to migrate southward in fall. The Blue-winged Teal migrates over long distances. One individual banded in Alberta was shot in Venezuela a month later.
Yellow Headed Blackbird
With a golden head, a white patch on black wings, and a call that sounds like a rusty farm gate opening, the Yellow-headed Blackbird demands your attention. Look for them in western and prairie wetlands, where they nest in reeds directly over the water. They’re just as impressive in winter, when huge flocks seem to roll across farm fields. Each bird gleans seeds from the ground, then leapfrogs over its flock mates to the front edge of the ever-advancing troupe.
In 1825 Charles Lucien Bonaparte, nephew of Napoleon Bonaparte, gave the first detailed description of the Yellow-headed Blackbird, which was collected in 1820 by Thomas Say and Sir John Richardson. The Yellow-headed Blackbird often nests in the same marsh as the Red-winged Blackbird. The larger Yellow-headed Blackbird is dominant to the Red-winged Blackbird, and displaces the smaller blackbird from the prime nesting spots. The Yellow-headed Blackbird is strongly aggressive toward Marsh Wrens too, probably because of the egg-destroying habits of the wrens. When the Yellow-headed Blackbird finishes breeding and leaves the marsh, Marsh Wrens expand into former blackbird territories.
Northern Pintail
Slim and long-necked, the Northern Pintail has a distinctive silhouette. The male is easy to identify by his striking markings and long tail, but even the female can be recognized by her graceful, long-necked shape.
Snow Goose
Watching huge flocks of Snow Geese swirl down from the sky, amid a cacophony of honking, is a little like standing inside a snow globe. These loud, white-and-black geese can cover the ground in a snowy blanket as they eat their way across fallow cornfields or wetlands. Among them, you might see a dark form with a white head—a color variant called the “Blue Goose.” Snow Geese have skyrocketed in numbers and are now among the most abundant waterfowl on the continent.
Snow Goose hunting in the eastern United States was stopped in 1916 because of low population levels. Hunting was allowed again in 1975 after populations had recovered. Since then, their populations have continued to grow, to the point that some areas of tundra nesting habitat are starting to suffer.
Lesser Scaup
This lesser scaup was photographed in Kansas. Two scaup species live in North America: the Greater Scaup prefers salt water and is found in America and Eurasia, while the Lesser Scaup prefers freshwater and is found only in North America. The Lesser Scaup is one of the most abundant and widespread of the diving ducks in North America
The Lesser Scaup is a regular, if relatively uncommon, visitor to Hawaii, and is the third most abundant duck in the state. Only the Hawaiian Duck actually breeds there. Lesser Scaup chicks are capable of diving under water on their hatching day, but they are too buoyant to stay under for more than just a moment. By the time they are 5 to 7 weeks old they are able to dive for 2-25 seconds and swim underwater for 15-18 meters (50-60 ft).
Saturday, March 29, 2014
Great Tailed Grackle
Photographed in Oklahoma! A big, brash blackbird, the male Great-tailed Grackle shimmers in iridescent black and purple, and trails a tail that will make you look twice. The rich brown females are about half the male’s size. Flocks of these long-legged, social birds strut and hop on suburban lawns, golf courses, fields, and marshes in Texas, the Southwest, and southern Great Plains. In the evening, raucous flocks pack neighborhood trees, filling the sky with their amazing (some might say ear-splitting) voices.
In winter, enormous flocks of both male and female Great-tailed Grackles gather in “roost trees.” These winter roosts can contain thousands of individuals, with flocks of up to half a million occurring in sugarcane fields in Texas’s Rio Grande Valley. In 1900 the northern edge of the Great-tailed Grackle’s range barely reached southern Texas. Since the 1960s they’ve followed the spread of irrigated agriculture and urban development into the Great Plains and West, and today are one of North America’s fastest-expanding species.
Sunday, March 2, 2014
Common Raven
The intriguing Common Raven has accompanied people around the Northern Hemisphere for centuries, following their wagons, sleds, sleighs, and hunting parties in hopes of a quick meal. Ravens are among the smartest of all birds, gaining a reputation for solving ever more complicated problems invented by ever more creative scientists. These big, sooty birds thrive among humans and in the back of beyond, stretching across the sky on easy, flowing wingbeats and filling the empty spaces with an echoing croak.
The Common Raven is an acrobatic flier, often doing rolls and somersaults in the air. One bird was seen flying upside down for more than a half-mile. Young birds are fond of playing games with sticks, repeatedly dropping them, then diving to catch them in midair. Common Ravens are smart, which makes them dangerous predators. They sometimes work in pairs to raid seabird colonies, with one bird distracting an incubating adult and the other waiting to grab an egg or chick as soon as it’s uncovered. They’ve been seen waiting in trees as ewes give birth, then attacking the newborn lambs. They also use their intellect to put together cause and effect. A study in Wyoming discovered that during hunting season, the sound of a gunshot draws ravens in to investigate a presumed carcass, whereas the birds ignore sounds that are just as loud but harmless, such as an airhorn or a car door slamming.
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