Black Bear Ursus Americanus Essay Research Paper free essay sample

Black Bear ( Ursus Americanus ) Essay, Research Paper There are 8 sorts of bears ( Ursus ) in the universe but I chose the North American Black bear ( Ursus americanus ) . I will be covering general information about the bear such as their size, weight, colour, nutrient, etc. , but I will dressed ore chiefly on the hole uping rhythm of the black bear. There are from 400,000 to 750,00 black bears in North America, and they weigh from 130 to 660 lbs with a organic structure length of 50 to 75 inches. Their colourss vary from black, cocoa brown, cinnamon brown, pale blue ( known as glacier bears ) to white. Black bears will frequently hold a brown muzzle and may hold a lighter colour spot on its chest. Its pess are equipped with strong, extremely curved claws. They? rhenium omnivores ; eating nuts, berries, fruits, insects ( particularly emmets ) , cervid and moose duns, carrion and in coastal countries on engendering salmon. Their home ground includes woods with occasional unfastened countries such as hayfields. We will write a custom essay sample on Black Bear Ursus Americanus Essay Research Paper or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page They occupy all of Canada get downing from the tree line traveling South. They live in all states and districts except Prince Edward Island, where heavy de-forestation has happened and sooner off from brown bears ( larger rivals ) . The lone chief hazard for black bears are poachers who sell their parts illicitly to the Asiatic medicative market. In northern countries of Canada, the bear undergoes a singular metabolic transmutation as it prepares for hibernation. Hibernation is an energy-saving procedure bears have developed to allow them last for long periods when there is deficient nutrient available to maint ain their organic structure mass. When they halt feeding and go progressively unenrgetic, the bear will come in a cave ; excavation out a lair ; or hole up in a dense coppice heap, hollow log or tree pit and hibernate. Right before it does this it starts to derive weight so it can last the long months in front. It can derive every bit much as 30 lbs per hebdomad. The bear hibernates between four to seven months. When it? s in a hibernating province the bear? s bosom rate beads from between 40 to seventy beats per minute to merely eight to twelve beats per minute. Its metamorphosis slows down by half, and its organic structure temperature reduces by 3 to 7 grades Centigrade ( 5 to 9 grades Fahrenheit ) . Besides its organic structure doesn? t release any wastes like urea or solid faecal waste but alternatively it? s recycled into useable proteins. During the hibernation period grownup males and adolescent bears lose between 15 % and 30 % of their weight while a female greenhorn with newborn loses every bit much as 40 % of her weight. Most black bears vacate their winter dens over a one to two month period get downing in April or May. Both the climatic conditions ( snow screen and temperature ) and physiological factors such as the bear # 8217 ; s age, the position of its wellness and its staying fat militias affect the clip it comes out. Normally, grownup males emerge foremost. Females with newborn greenhorns are normally the last 1s to go forth their lair, and go on with their life rhythm. Bibliography I merely used the web to happen information and these are the sights I visited: hypertext transfer protocol: //www.nature-net.com/bears/black.html hypertext transfer protocol: //www.bearden.org