Birds of North America

population has declined by over 2% per year between 1966 and 2015, resulting in a cumulative decline of 65%, according to the North American Breeding Bird Survey. Ground based nests are very vulnerable to predators. Many of the “usual suspects” of egg and nestling predators affect bobolink nests (including skunks, raccoons, foxes, and snakes). A surprising bobolink nestling predator is the white-tailed deer. It is not known how many nestlings are eaten by deer each year, but up to 70% of bobolink eggs and nestlings are lost to predation each breeding season. Other species that breed in same habitat- The grasshopper, sparrow, upland sandpiper, meadowlark, savannah sparrows, and vesper sparrow. Management practices that support grasslands/ground nesting birds- change mowing times on fields- we will greatly increase their reproductive success and halt the decline of these species. Do not mow fields from May 15 through Early July Collect the cut hay no more than twice a year Discourage the growth of forbs and woody vegetation Reduce disturbance during the breeding season Limit foot traffic (people on trails) Dogs must be on leash or not allowed during nesting No major events in/near…

was introduced to North America in the 19th century. They were imported at great expense from Europe by Eugene Schieffelin around the 1890s to U.S and labeled as an invasive species. But unlike many other invasive birds, it was not protected under U.S law. Meaning no harm, Schieffelin goal was to just introduce all the birds mentioned by William Shakespeare in North America. Schieffelin released about 100 European Starling right in the heart of New York; Central Park. Many thought the birds…

(flat slab subduction) 1. Very low angle subducting slab 2. rubbing against underside of North American plate 3. first proposed by william dickinson (1978) 4. another good paper Peter Bird (1988) • Alternative theories 1. Craig jones - suction model 2. (maxson, Tikoff 1996) - Hit and run collision model "I 'll come back to it" Introduction Within the North American cordillera there lies an expansive region of mountain ranges, basins, and plateaus, stretching from Mexico through America and…

The Americas – Period 2 consist of North America and Latin America 600-600 CE. Many changes happened whether they were political, economic, or social. Changes over time for North America included trade expansion, tribal government, and agriculture. For South America changes were in the pyramids, Mayan astronomy, and village organization. North America's change in trade expansion and continuity in village life, nomadism, polytheism, and shamanism. Latin America's change in Pyramids, ceremonial…

HABITAT: According to the website the northern hawk owl lives in coniferous or mixed forests near open areas in Canada and the United States. It nests in cavities including old woodpecker nests and hollow tops of broken tree trunks. DIET According to the website the hawk owl eats mostly small mammals especially voles. It also eats some birds especially in winter. The northern hawk owl can detect prey by sight at a distance of up to 800 meters. It is thought to detect prey primarily by…

Bos bison, or the American bison, is the largest land mammal native to North America. It is placed in the same genus, Bos, as the domestic cattle. However, some taxonomists categorize it in the genus Bison, arguing that there is a substantial number of differences to separate it from domestic cattle. The American bison can be separated into two subspecies: B. Bison bison and B. Bison athabascae. B. Bison bison, or the plains bison, is more common in western United States. The plains bison also…

One of the most fascinating creatures to me as a child was the monarch butterfly. Not only for its eye-catching wings that match the autumn leaves, but how they are the only butterfly that migrates south for the winter, similar to birds. Every year, millions make their journey from North America to Mexico or California, although those individual butterflies won’t return. Monarch migration is one of mother nature’s greatest phenomena. They migrate for two reasons: they cannot withstand the harsh,…

with a wing span of 4 inches and 10 centimeters long – the longest wing span ever recorded within the monarchs’ insect population (Conant, 2012). Monarchs are notorious in the United States because of their spectacular migration across Canada and the United States to the overwintering sites in central Mexico – and back again. In this case, monarchs migrate between 2,000 to 3,000 miles every single year (Urquhart, F.A. and Urquhart, N.R., 1976). A monarchs ' 3,000 mile trip is like a person…

Importance of studying Native North Americans The importance of studying the Native North Americans or any other indigenous group is that, the studies tend to offer an opportunity for intellectuals and different scholars to reflect more about the past, learn the history of colonization, and to find appropriate and effective means to forging a stronger future for different nations. The studies also help learners to get facts about the cultural groups that exist in the North Americas. The various…

Long before the European race pierced through the North American continent, the indigenous people of what is now the “United States” lived in peace and harmony. Just like most other civilizations of their time, this broad group of indigenous natives created their own creation myths and stories to ease their worried minds of the past and future. Though there are hundreds of creation myths still cycling through cultures in today’s society, the Natives of North America have very distinct features…