Bird migrations on the North Slope and in the Mackenzie Valley regions, 1972 by L.G.L. Limited, Environmental Research Associates.

Cover of: Bird migrations on the North Slope and in the Mackenzie Valley regions, 1972 | L.G.L. Limited, Environmental Research Associates.

Published by Canadian Arctic Gas Study, Alaskan Arctic Gas Study Co. in [Calgary], [s.l.] .

Written in English

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  • Northwest Territories,
  • Mackenzie River Valley.,
  • Yukon Territory.


  • Birds -- Migration -- Northwest Territories -- Mackenzie River Valley,
  • Birds -- Migration -- Yukon Territory

Edition Notes

Book details

Other titlesArctic gas.
Statementedited by W. W. H. Gunn, John A. Livingston ; prepared by L.G.L. Limited, Environmental Research Associates.
SeriesBiological report series ;, v. 13
ContributionsGunn, William W. H., Livingston, John A., Canadian Arctic Gas Study Limited., Alaskan Arctic Gas Study Company.
LC ClassificationsQL685.5.M25 L2 1974
The Physical Object
Pagination162 p., [10] leaves (7 fold.) of plates :
Number of Pages162
ID Numbers
Open LibraryOL4925183M
LC Control Number76351526

Download Bird migrations on the North Slope and in the Mackenzie Valley regions, 1972

Bird migrations on the North Slope and in the Mackenzie Valley regions, [Calgary]: Canadian Arctic Gas Study ; [s.l.]: Alaskan Arctic Gas Study Co., (OCoLC) Mission.

The North Slope Borough is committed to having healthy communities, economically, spiritually and culturally. The Borough 1972 book with the tribes, cities, corporations, schools, and 1972 book to support a strong culture, encourage families and employees to choose a.

Birds flying in the sky. Mackenzie Valley-Great Lakes – Mississippi Valley Routes and Tributaries (route 3) Some routes in this flyway have been renamed. This bird migration route is the longest of any in the Western Hemisphere. It extends from the Mackenzie Valley past the Great Lakes and down to the Mississippi valley.

Cooke WW () Bird migration in the Mackenzie Valley. Ibis – Google Scholar Cramp S () Handbook of the birds of Europe and Middle East and North Africa, Vol by:   Bird Migration Routes. Many North American birds come to the far northern regions of the continent in summer to reproduce and raise their young.

Long summer days in the north produce an abundance of insects and plants for birds and their young to eat. Because this food is not available during cold, winter months, many birds migrate south to.

The winter bird migration can be observed from a myriad of wildlife refuges, parks, and preserves located around the state. However, Sacramento National Wildlife Refuge is an especially notable place to spot birds—especially since they already estimate that up to a million waterfowl have arrived this year.

may not apply to day migrants and to migrating birds in other regions. Lincoln Park lies in a 41/z mile strip along the shore of Lake Michigan, the strip averaging about l/z mile wide. The southern boundary is along North Avenue, 2 miles north of the business center of Chicago.

The study. Different types of birds take routes of widely varying lengths. Some round-trip migrations can be as long as 44, miles, equivalent to almost two round-the-world are much shorter. Original sources for migration descriptions referenced in the Birds of North America accounts are listed by number below the table.

Open in new tab One hundred and sixteen continental species undertake altitudinal migrations within the USA or Canada (% of continental altitudinal migrants or % of all continental species in the dataset).

The Mackenzie valley is believed to have been the path taken by prehistoric peoples during the initial human migration from Asia to North America o years ago, despite sparse evidence. The Inuvialuit, Gwich'in and other indigenous peoples lived along the river for thousands of years.

The river provided the major route into Canada's. Arguably the best location in the world for viewing bird migrations is the Central Platte River Valley and Rainwater Basin of south-central Nebraska, which attracts up to three million geese, fifty-two species of waterbirds, and the world's largest concentration of cranes (,) in spring.

Bird migration is generally thought of as a north-and-south movement, with the lanes of heavier concentration following the coasts, mountain ranges and principal river valleys.

In general, it may be said that the great routes of migration do conform very closely to major topographical features when these happen to lie in the general direction.

Migrations generally follow a north-south pathway, although a few bird species – namely oceanic birds -- may migrate in a circular pattern. Fall Migration Timing. With so many bird species migrating to and from North America, it’s impossible to pin down exact dates for fall bird migration.

Migration in Motion: Visualizing species movements due to climate change. Species on the Move: Mapping barriers for wildlife in a warming World. References. Lawler, JJ, et al. Projected climate-driven faunal movement routes.

Ecology Letters 16(8): McGuire, JL, et al. Achieving climate connectivity in a fragmented. America has no seas or deserts to separate the north from the south, so migration is easier for birds that need to feed along the way. This explains why some tropical species from South America, such as the ruby-throated hummingbird, have extended their breeding range as far north as Canada.

Heading north. Not all migrants head south for winter. Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): ersitylibrary (external link).

(My book, Birds of the Pacific Northwest: How to Identify 25 of the Most Popular Backyard Birds is a fun and easy-to-use resource.) Learn how to identify the birds you’ll see this fall — both the usuals and the birds passing through on their migration routes — and be able to recognize the birds.

Leopold-Pine Island Important Bird Area, Wisconsin The 1,acre Leopold Memorial Reserve (named for conservationist Aldo Leopold, author of A Sand County Almanac) -- and the Leopold-Pine Island Important Bird Area surrounding it -- is a great area to see birds year-round.

But particularly in the spring and fall, you can see many birds stopping during their migration that would not normally. Bird migration is the regular seasonal journey undertaken by many species of birds.

Bird movements include those made in response to changes in food availability, habitat, or weather. Sometimes, journeys are not termed "true migration" because they are irregular (nomadism, invasions, irruptions) or in only one direction (dispersal, movement of young away from natal area).

Migration is marked. Winter Destinations of Boreal Birds. About 90% of all bird species and individuals leave their breeding grounds in the North American Boreal Forest after the summer breeding season. For landbirds alone, the top five destinations are: Destination (Est.

number of wintering birds) USA (1,) Mexico (,) Brazil (,). Map 1: North Dakota has three distinct regions based on geography and soil. The Red River Valley is flat with good soil and little drainage.

The Drift Prairie is characterized by small ponds, and hills, and rocky soil. The Missouri Plateau is the highest land in North Dakota. Migration season has arrived, and North Carolina’s mountain birds are on the move.

Spot them at Blue Ridge Parkway, Mount Mitchell State Park, Roan Highlands, and New River Corridor before they make the journey to their wintering grounds from the Southeastern US to the Caribbean, South America and Central America. August Departures Red-eyed Vireo.

Photo: Caroline Gilmore. The ferruginous hawk is the largest hawk found in North America. With a wingspan of up to 56 inches (roughly feet) this hawk soars over open grasslands hunting small rodents and mammals.

The ferruginous hawk breeds in the Northern Great Plains and eastern slopes of the Rockies during summer months, and makes its way west to California and.

Frederick C. Lincoln’s “Migration of Birds” was published in Lincoln’s writing style effectively communicated the wonders of bird migration to a wide audience, both young and old, experienced observers of birds as well as the simply curious.

Indeed the demand for this little book. Bird migration is the regular seasonal movement, often north and south along a flyway, between breeding and wintering grounds. Many species of bird migrate.

Migration carries high costs in predation and mortality, including from hunting by humans, and is driven primarily by availability of occurs mainly in the northern hemisphere, where birds are funneled on to specific routes by.

We often look into the skies to see the birds flying north for the summer or south for the winter. For just one person, it can be an awe-inspiring glimpse to see the birds flying in formation.

The routes followed by migratory birds on their journeys between their breeding and wintering places are known as flyways.

BirdLife Partners in countries and territories along the world’s great flyways are taking action for migratory birds, by protecting chains of IBAs used as feeding and resting sites, and working with governments, developers and funding agencies to reduce the impacts of.

North Carolina is a must-visit destination state when it comes to feathered fauna, with over species being documented to-date with over half that number found breeding here. Here is our list of some must-see bird migrations across the state.

Tundra Swans You can't help but notice the Tundra Swan with its white plumage and long, slender neck. Light: Light levels and the overall daily angle of the sun are strong clues for the change of seasons. As the days grow shorter and light angles shallower birds know the time is right to begin migration.

Temperature and Climate: Cooler temperatures are another indication of the change of some climates, the onset of more rains (the rainy season) is another factor that influences the.

Bird Migration. We know more about bird migration than other animal migrations. 10,69–72 Some bird migrations are particularly spectacular because of the immensely long distances traveled.

The migratory feats of very small birds, such as hummingbirds, capture the imagination as extraordinary behavioral and physiological feats. Migration is a form of adaptation.

Birds migrate to survive. Learning about migration is one of the best ways to understand the risks that birds and other animals must take in their daily lives - and it's a great way to interpret the changes you can see in the bird life around you.

On cranes and bird migration in general, see Jonathan Elphick, ed., The Atlas of Bird Migration (Buffalo, NY: Firefly Books, ), esp. For North American migrations in particular, see Miyoko Chu, Songbird Journeys (New York: Walker & Co., ).

The Homer quote is from the Iliad, Book 6, linesmy translation. Geese winging their way south in wrinkled V-shaped flocks is perhaps the classic picture of migration—the annual, large-scale movement of birds between their breeding (summer) homes and their nonbreeding (winter) grounds.

But geese are far from our only migratory birds. Conservation of migratory birds needs a coordinated response on a global scale. Flyways - the entire geographical areas used by migratory birds during an annual cycle, including the breeding and wintering grounds, migration routes and stopover sites - provide a way to forge international collaboration.

The BirdLife Partnership is ideally placed to deliver this, with national Partners. This represents a staggering 40 percent of all bird species. In North America, about different species migrate.

Clearly, migration is a winning strategy for survival. Even now, the birds that return first in the spring claim the best territories with the best sources of food. These birds are Reviews: 7. 1. At least 4, species of bird are regular migrants, which is about 40 percent of the total number of birds in the world.

(Although this number will likely increase as we learn more about the habits of birds in tropical regions.) 2. Birds can reach great heights as they migrate.

For the first time, scientists at the Cornell Lab of Ornithology have documented migratory movements of bird populations spanning the entire year for species throughout the Western Hemisphere.

The study finds broad similarity in the routes used by specific groups of species—vividly demonstrated by a brand new animated map showing patterns of movement across the annual cycle.

By Dan Dubie, graduate student in the Institute's 16th cohort. The story of bird migration encompasses the whole world and the incredible journeys that take part on it.

Traveling via flight was mastered by humans just over a hundred years ago but for the avian world, it has been a home for mu. Now Ben Winger of the University of Chicago in Illinois and his colleagues have strong evidence that most migrants hail from the north, not the south.

Point of. Purchase The Migration Ecology of Birds - 1st Edition. Print Book & E-Book. ISBN. Migration allows birds to take advantage of seasonally-beneficial climates and food supplies and to avoid the adverse conditions occurring in these sites at other times of the year.

More than North American bird species migrate throughout their annual life cycle. There are more than species of birds found in BC, most of.Students will know how birds find their way on migrations.

4. Students will be able to name some of the hazards birds find on their migrations. 5. Students will know why many birds migrate at night. 6. Students will know what a “flyway” is, name the four flyways in North America, and know what a.

As the year nears spring, the Southeast Arizona bird migration from the south to the north begins again.

March and April are particularly great times to see the birds on the wing with stop-overs at locations on the San Pedro River. During the year approximately birds have been documented along the San Pedro River Valley.

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