Mississippi Flyway:
This flyway is relatively simple although it presents some features of
interest, chiefly as they affect the migratory waterfowl. It's
eastern boundary runs through the peninsula of southern Ontario to western
Lake Erie, then southwestwardly across Ohio and Indiana to the Mississippi
where it rather closely follows the river to its mouth. The western boundary
does not have such precise definition as the eastern boundary, and for this
reason in eastern Nebraska and western Missouri and Arkansas the Mississippi
Flyway merges imperceptibly into the Central Flyway. The longest migration
route of any in the Western Hemisphere lies in this flyway. It's northern terminus is on the Arctic coast of Alaska
and its southern end in Patagonia. During the spring migration some of the
shorebirds traverse the full length of this great artery and several species
that breed north to Yukon and Alaska must twice each year cover the larger
part of it. For more than 3000 miles, from the mouth of the Mackenzie to the
delta of the Mississippi, this route is uninterrupted by mountains. There is
not even a ridge of hills on the entire route that is high enough to
interfere with the movements of migrating birds, and the greatest elevation
above sea level is less than 2000 feet. Well timbered and watered, the entire
region affords ideal conditions for the support of hosts of migrating birds.
The two rivers that mark it, the Mackenzie emptying on the Arctic coast and
the Mississippi in the Gulf of Mexico, have a general north-and-south direction,
another factor in determining the importance of this route which is used by
large numbers of ducks, geese, shorebirds, blackbirds, sparrows, warbler and
thrushes,
The majority of North American land birds, seeking winter homes in the
tropics, that come south through the Mississippi Flyway take the short cut
across the Gulf of Mexico in preference to the longer, though presumably
safer, land or island journey by way of Texas or the Antilles. During the
height of migration some of the islands off the coasts of Louisiana and Texas
are wonderful observation places.
It was once thought that most of the North American birds that migrate to
Central America made a leisurely trip along the west coast of Florida,
crossed to Cuba and then made the short flight from the western tip of that
island to Yucatan. The map will suggest this as the most natural route, but
as a matter of fact, it is used by only certain swallows and shorebirds, or
an occasional individual of some other species that has been driven from its
accustomed course.
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Mississippi Flyway with Routes
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