<h2><SPAN name="MIGRATORY_BIRDS" id="MIGRATORY_BIRDS"></SPAN>MIGRATORY BIRDS.</h2>
<p>IN the New World the birds of the
temperate zone are rather perplexing
in their migratory habits. Many
of those which go north to Canada
and Alaska in the summer pass the
winter in Mexico, Panama, and even
South Columbia; while others, as well
as a number of migrants from the
United States, go over to the West
Indies. One of the most wonderful instances
of migration is that of the tiny
flame-breasted humming-bird (<i>Selasphorus
rufus</i>), which breeds on the west
coast of America as far north as Alaska
and Bering Island, and winters in Lower
California and Mexico. Thus, with unerring
instinct, this diminutive bird,
scarcely two inches long, flies twice a
year the astounding distance of over
3,000 miles. The birds which belong
to the second class—those which breed
in the Arctic regions—comprise the
swans, many of the waders, and a considerable
number of ducks and geese.
In Europe these birds spend the winter
in all the countries from England
south to the Mediterranean and Black
seas, some even going as far south as
the upper reaches of the Nile. In
Asia most of the waders, such as snipe,
woodcock, sandpipers, and plovers, as
well as the ducks and the geese, spend
the winter in India and South China.
In America the Arctic birds migrate to
the Southern United States and Mexico.</p>
<p>The partial migrants, which form the
third class, are rather more puzzling in
their movements, for among them we
find birds whose motives for wandering
are very diverse. Some are unwilling
slaves—<i>i. e.</i>, they get mixed up in the
big flights of true migratory birds, and
are irresistibly hurried along with
them; such are the rooks, starlings,
robins, etc., which are so frequently
seen in Heligoland in the midst of a
flock of swallows, warblers, and other
genuine migrants. Another lot of these
partial migrants are those which, perhaps,
most justly deserve this name;
viz., such birds as larks, pipits, titmice,
etc., which, although resident with us
all the year round, at times greatly
diminish in numbers, owing to more
than half the individuals changing their
abode. For instance, those which
breed in Scotland and England wander
in the winter over to France, but, unlike
the true migrant, always leave
some of their number behind.—<i>Walter
Rothschild, The Nineteenth Century.</i></p>
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