Annotated Bibliography: Owl Populations And Habitats

The installation of a Barn Owl box provides Barn Owls shelter, so they can reduce the rodent population there for food (Williams 1). This also decreases the risk of Barn Owls, as well as other nontarget animals, from being poisoned by rodenticides because less rodenticides are utilized. In addition, in order for a box to be installed, the property in which it will be placed cannot have used pesticides in the last 3 months (“Nesting Boxes”).

Rachel Carson is a noted biologist who studies biology, a branch of science addressing living organisms, yet she has written a book called Silent Spring to speak about the harmful effects of pesticides on nature. Carson doesn’t write about birds’ genetic and physical makeup, the role of them in the animal food chain, or even how to identify their unbelievable bird songs, yet strongly attests the fight for a well developed environment containing birds, humans, and insects is just and necessary. To Carson, the war for a natural environment is instantly essential for holding on to her true love for the study of biology. Thus Carson claims that whether it be a direct hit towards birds or an indirect hit towards humans and wildlife, farmers need to understand the effects and abandon the usage of pesticides in order to save the environment by appealing to officials, farmers, and Americans in her 1962 book, Silent Spring. She positions her defense by using rhetorical devices such as rhetorical questioning to establish logos, juxtaposing ideas, and using connotative and denotative diction.

investigation. The owls also may be coming in contact with pesticides indirectly through other animals

These methods lead to the reduction of chick survival and bird population. The emission of fumes from the insecticides cuts off the air supply of oxygen which birds initially require to survive. Farmland bird species is on decline because of ill advised changes in farming techniques. These include increased agrochemical inputs and loss of mixture farming.

Whooping cranes nearly died out in the mid 20th century, with a count finding only 16 living birds. But since then, these endangered animals have taken a step back from the brink of extinction. Breeding programs have boosted their numbers, and breeding efforts have raised the number of wild birds to over 200, with roughly the same number living in captivity. These white birds are the tallest in North America. They live in family groups and stay in marshes, shallow lakes, and lagoons. Cranes feed by foraging with their bills and gobbling up plants, shellfish, insects, fish, and frogs.

Barred owls are large, stocky owls with rounded heads, no ears tuffs, and medium length rounded tails. Barred owls live in large, mature forests near water. Spotted owls are dark-brown, large owls with rounded heads, the wings are broad and rounded, and the tail is short. Spotted owls also live in mature, large forests but, are sensitive to habitat disturbance. Now, Barred owls and Spotted owls are in a intense war for homes.

In the early 1940’s, a new technology emerged that was able to successfully combat crop-damaging and disease-carrying insects. A new age of synthetic chemical pesticides use arose. After their impressive success in fighting deadly insect-borne diseases during World War II, pesticides were used widely to combat insect pests for agriculture and public health. Few people challenged the benefits of the new scientific and technological products and many embraced pesticide use with enthusiasm. Despite its success, doubts about pesticide use began to appear a decade later in the 1950’s, when the government began a vigorous pesticide campaign across the country against insect pests. Scientists began reporting heavy losses of avian and

Soaring high above the ground late at night, under the dark canopy of trees. Stooping down low to catch a small rodent. It flies back up into its nest, ready to eat. There is only one animal that matches all of these descriptions, and that’s an owl! A particular owl, called the Northern Spotted Owl, is a small brown bird that lives in old-growth forests also known as “cloud forests”. This essay will provide information on the northern spotted owl and discuss its appearance, habitat and diet, and give you some interesting facts about it.

Since humans are moving into the natural habitats plant species are dwindling in numbers. Which alters the habitats for which birds relied on for a camouflaged and protected home? Migratory birds are also moving to other areas due to the land pollution. Human waste, cigarette butts, snack wrappers, and beverage containers are all contributing to the growing land pollution.

The spotted owls in western North America still exist today, despite being an endangered species. There has been plenty of controversy surrounding the species regarding their habitat because their habitat is desired and used by logging companies. These owls tend to reside in old forests as they prefer old trees which are also preferred for logging. There has been plenty of controversy on whether or not logging companies should be put to a halt in forests that these owls reside in, which involve balancing values of environment and economy. This is mainly due to the fact that logging provides jobs as well as resources to people, despite the fact that it affects the owls and their ecosystem. It is debated whether or not owl’s habitat and ecosystem should be protected or not for the sake of logging.

My hypothesis was supported due to the data. For example, I found that there seems to be a wide variety of small animals in the Northwest, while in the Southeast there seems to be more of one major type of specie that the owls thrive off of, which was the vole at 26. Some of the species that were present in the Northwest than the Southeast were pocket gopher, and mole. The habitat of barn owls living in the Northwest is more stable than of barn owls living in the Southeast due to the wide variety of prey within the barn owls’ ecosystem, according to the data there were 3 pocket gophers and 3 moles in the Northwest pellets, compared to the Southeasts zero pocket gophers and moles. Similarly, the Northwest pellets contained 2 more shrews, compared

In the book 'Silent spring ' written by Rachael Carson we find a picture of Carson 's deep concept about the connection between nature’s equilibrium and the web of life that has been ruined by the uncontrolled use of insecticides which in turn affected the healthy livelihood of this earth’s creatures. Furthermore, she tells the readers of substitute techniques of achieving the same ends. The title of the book is enough to make us understand that it was a hint of a spring season with no bird songs painting our atmosphere meaning that all birds had vanished due to misuse of pesticides.

Statistics regarding The time and place of when Animals die is vital to understand the population pronouncement. During migratory periods like winter, breeding, and also during migratory, the when and where animals die is important for us to understand population regulations. In migratory animals, mortality may prevail not only during the stationary periods but can also happen during the migrational seasons. But, the relative significance of population limiting factors during different periods of the year remains poorly understood, and previous studies mainly relied on indirect evidence.

Among the many human activities that cause habitat loss (Czech et al. 2000), urban development accounts for some of the greatest local extinction rates and frequently eliminates the large majority of native species (Vale and Vale 1976, Luniak 1994, Kowarik 1995,Marzluff 2001). Also, urbanization is often more continous than other types of habitat loss. Throughout much of New England, for example, ecological succession is restoring forest habitat lost from farming and logging, whereas most urbanized areas in that region continues to grow and threaten other local ecosystems (Stein et al. 2000).

Have you ever wanted to have a bonfire? Do you love the home you live in? Do you ever waste the water you drink? The next time you focus on these conveniences or advantages of your life, consider what you’re doing to the wildlife environment. Wildlife habitats are being destroyed in many ways by many factors. For the purpose of this paper I’m going to focus on the following five areas.