vilized man takes possession of new regions and begins
cultivating the soil and establishes his sovereignty there, the
equilibrium as it existed upon his arrival is very quickly disturbed.
One or more of the many forms of life--plant and animal--that were
previously held within certain limits gain ascendency. The
introduction of new crops that furnish an abundance of the proper food
for some insect, enables this form to increase out of all proportions
and harm soon results. The killing off of certain other forms of life
that naturally keep still others in check also assists in disturbing
the equilibrium further. The cutting down and clearing away of forests
removes the shelter and homes of others, as does also the turning
under of prairie grasses. Then, too, many of the natural residents of
primeval forests and virgin prairies shun the sight of man, hence they
gradually withdraw from the region, and their influence for good or
evil goes with them. Since the majority of such forms are timid and
inoffensive creatures, their withdrawal only adds that much more to
the already overbalanced conditions. Year by year the gap which at
first was scarcely noticeable becomes widened, so that frequent
inroads are made and harm results. Instead of trying to ascertain the
true cause for all this trouble perhaps exactly the wrong thing is
done by the settlers. This of course only has the effect of further
widening the gap between safety and danger. Since an insect or other
animal becomes noticeably harmful only when present in alarming
numbers, it stands to reason that anything which favors such an
abnormal increase is a factor in disturbing nature and should be
quickly rectified where possible. In order that these disturbances
should be looked after the all-wise God of the universe created birds
and gave them the power of flight that they might the more readily
move about rapidly from place to place, where their services might be
needed in balancing affairs. Hence birds have naturally and rightfully
been called the "balancers" in nature. This being true, let us see
just what their relations are to agriculture.

The farmer sows in order that he may reap an increased measure of what
he has sown. In doing this he must first turn over the soil. This
destroys many existing plants as well as animals that depend upon them
for food. The plants thus turned down cannot regain their position
and must of necessity die. Not so with many of the ani