Download PDF by Kim Long: Beavers : A Wildlife Handbook

By Kim Long

ISBN-10: 155566251X

ISBN-13: 9781555662516

A mix illustrated box consultant, truth booklet, and folklore assortment, "Beavers" is a special and functional advisor to those awesome creatures, the most prolific normal developers within the animal country. Beavers are one of many nice natural world luck tales of the 20th century. Hunted to close extinction in so much of their conventional diversity in North the United States, populations of those mammals at the moment are thriving in lots of components. This concise instruction manual offers a correct, informative portrait of beavers and their typical atmosphere, making it a pragmatic source either for armchair naturalists and observers within the box. integrated during this name are distinct courses to the habit, biology, and ecological impression of this species. a big concentration is put on the truth of what beavers truly do in comparison to the myths which have been propagated for centuries. issues lined comprise beavers’ ancient and modern variety, their anatomy, fossil historical past, really expert physique components, replica, feeding conduct, swimming abilities, engineering abilities, hottest habitats, meals assets, year-round actions, selecting indicators, predators, illnesses, and survival instincts. "Beavers" additionally features a attention-grabbing research of the interrelation among those animals and human cultures, together with international myths and legends and their value to North American Indian tribes. Of certain curiosity is their conventional value as a foodstuff and fur resource within the New international, one of many pivotal catalysts within the exploration of North the USA.

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Example text

But there is no evidence that giant Page 46 beavers built dams and some experts believe that they may have thrived only because of the presence of natural lakes and swamps.  In 1906, paleontologists discovered the fossil remains of a giant beaver at the bottom of one of the spirals, the first evidence that this animal existed.  Among rodents, twenty­eight families and more than 2,000 different species are now recognized.  One is the beaver found in North America, whose taxonomic name is Castor canadensis, and the other is a similar­looking animal found in Europe, with the taxonomic name of Castor fiber.

In one measurement taken during winter conditions, adult beavers spent an average of two­and­a­half hours a day in the water, about 10 percent of a twenty­four hour period.  These flaps can be pulled together when a beaver is underwater, sealing the water out of its mouth and lungs and allowing the animal to use its teeth while submerged. beaver body that are not heavily furred and comprise about 30 percent of its total surface area.  This important airway connects directly to the upper lungs, permitting the beaver to chew and swallow, and breath through its nose at the same time.

Colony territories range from 10­75 acres.  In some streams and rivers, lodgings may be burrows dug into banks, with underwater entrances.  Primary diet of inner bark, twigs, leaves, and shoots of trees, especially poplar, aspen, willow, and cottonwood, as well as alder, birch, beech, maple, and oak. Also eats grasses, water plants, algae, moss, water lilies, fruit, and berries.  Adult beavers may be taken by bears, wolves, coyotes, and dogs.  Adults are usu­ ally monogamous and often mate for life; young beavers usually begin mating when they are two to three years old.

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Beavers : A Wildlife Handbook by Kim Long

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