Catalog Search Results
Description
In the first of six lectures on the bird families of North America, study four groups of birds that most people will find close to home. Begin with waterfowl, birds that swim in fresh water or near the ocean shore. Continue with wading birds, with their distinct physical profile; shorebirds, a vast group which includes sandpipers; and upland game birds.
Description
Look first at three physical tools that you can use right away to become a more effective birder. Consider how familiarity with the shape or silhouette of bird families, as well as bird size, aid you in focusing in on exact species. Study the color factors of pigment and keratin, as they produce the dazzling range of bird coloration, and investigate color as an identification tool.
Description
Begin to uncover the huge spectrum of Passerines (perching or songbirds). Start with the flycatchers, aerialists adept at catching insects in midair, and the shrikes, rare songbirds with a raptor lifestyle. Within this far-ranging lecture, encounter bird families such as the crows and jays, magpies, larks, swallows, chickadees, wrens, dippers (the only aquatic songbirds), and thrushes.
Description
Here, study several diverse groups of birds, ranging from the familiar to the exotic. Explore the surprising variety of pigeons and doves, and trace the sad demise of the passenger pigeon. Note the presence of "introduced" parrots in the U.S., and discover the range of cuckoos, anis, woodpeckers, trogons, swifts, hummingbirds, and kingfishers that flourish across North America.
Description
Among twelve top Western birding sites, visit the Alaska Maritime National Wildlife Refuge, nesting site of forty million seabirds; California's Point Reyes National Seashore, which hosts a massive 490 species; the Grand Canyon, a Globally Important Bird Area; and a Texas park that sees a million migrating raptors each fall.
Description
Continue with the astonishing variety of North American songbirds. Learn about birds that mimic, the mockingbirds and catbird, and the thrashers, with their namesake feeding behavior. Track the striking bulbuls, the starlings, pipits, wagtails, waxwings, longspurs, and snow buntings, and finish with the vast array of warbler species, and the challenges they pose to identification.
Description
Begin by contemplating the integral connections between birds and dinosaurs. Examine mounting evidence that birds not only evolved directly from dinosaurs, but also that they are themselves dinosaurs. Consider how bipedal reptiles gained the ability to fly, becoming birds, and how the cursorial (from the ground) and arboreal (gliding) theories of the origin of flight may intersect.
Description
Discover the remarkable physiological features of birds that undergird flight. First, note how and why feathers evolved. Then, investigate the high metabolism of birds - they must burn energy at an astounding rate. See how birds are adapted for flight by many weight-reducing factors, and how their respiratory, circulatory, and excretory systems, as well as heightened senses, keep them airborne.
Description
Investigate three forms of avian polygyny, where one male mates with several females, and the factors that make it a useful adaptation. Then discover "leks," courtship arenas where males compete for mates, and witness the dramatic courtship displays of some male birds. Marvel at the Australian bowerbirds, who build elaborate, decorated structures whose only purpose is to attract a mate.
Description
One of the best ways to curb instincts in your dog is to instill impulse control. Professor Donaldson teaches you how to teach dogs to cool their jets with sit-stay, down-stay, leave it, wait, and loose leash walking. She'll also cover the three most important parameters in down-stay and sit-stay: distraction, distance, and duration.
Description
Open sea birding adds another exciting dimension to birdwatching. Begin with an introduction to sea trips for birding, covering types of excursions and vessels, equipment, and important logistical and safety information. Preview the remarkable birds you'll see, from the mysterious albatross to petrels, tropicbirds, pelicans, gulls, puffins, and the best places to embark from to see them.
Description
Professor Donaldson defines fear or aggression versus just being upset and teaches you how to recognize these traits in dogs. She outlines the five mechanisms that drive fear and discusses a classification system that covers aggression to strangers, resource guarding, and intolerance of body handling, as well as suggestions for handling each behavior.
Description
Professor Donaldson provides alternatives for dogs who have trouble with sit and down. She then continues with fundamental obedience through recall, or coming when called, using classical - or Pavlovian - conditioning. She'll also review the importance of choosing and using the appropriate verbal cues.
Description
Professor Donaldson debunks a common myth about dog behavior. She discusses in depth the reasons dogs may have accidents and provides several ways to train your dog out of this behavior. She covers a number of techniques to curb common bad habits such as chewing and digging with distraction or alternatives.
Description
Investigate the anatomy of birds, and how understanding anatomical features aids us in identification. Then learn about the fascinating range of bird feathers, and their different functions. Observe how understanding the flight patterns of birds helps identify them in the field. Last, compare two common birds, as an exercise in using the knowledge you've learned so far.
Description
Some additional birding skills are needed for night viewing of birds. Learn about equipment for night birding, ways of locating nocturnal birds, and approaches to viewing migrating birds at night. Then investigate the fascinating range of night birds, encompassing the great diversity of owls, as well as species such as night-herons, nighthawks, and nightjars.
Description
Explore the hatching process and the contrasting conditions for altricial chicks (born naked and helpless) versus precocial chicks (born ready to leave the nest). Delve into how birds feed their young, and the process of educating fledglings for life in the wild. Study the adaptations of siblicide (nestlings killing each other), unmated young who help raise broods, and avian communal breeding.
Description
Compare models which may explain female birds' choice of mates. Observe how females "test" potential mates and how males provide a basis for choice, through courtship displays or offering prime territory. Study the intricacies of avian monogamy and polygamy; take account of pair bonding in birds, extra-pair mating, sexual role reversal, and the avian equivalents of "adultery" and "divorce."
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