Some Common Birds in Their Relation to Agriculture — John Shaqi
Some Common Birds in Their Relation to AgricultureBeal, F. E. L. (Foster Ellenborough Lascelles)
Science
Some Common Birds in Their Relation to Agriculture
Beal, F. E. L. (Foster Ellenborough Lascelles)
Birds -- United States
There are few birds so well known as the common crow, and unlike most
other species he does not seem to decrease in numbers as the country
becomes more densely populated. The crow is commonly regarded as a
blackleg and a thief. Without the dash and brilliancy of the jay, or the
bold savagery of the hawk, he is accused of doing more mischief than
either. That he does pull up sprouting corn, destroy chickens, and rob the
nests of small birds has been repeatedly proved. Nor are these all of his
sins. He is known to eat frogs, toads, salamanders, and some small snakes,
all harmless creatures that do some good by eating insects. With so many
charges against him, it may be well to show why he should not be utterly
condemned.
The examination of a large number of stomachs, while confirming all the
foregoing accusations, has thrown upon the subject a light somewhat
different from that derived slowly from field observation. It shows that
the bird's nesting habit, as in the case of the jay, is not so universal
as has been supposed; and that, so far from being a habitual nest robber,
the crow only occasionally indulges in that reprehensible practice. The
same is true in regard to destroying chickens, for he is able to carry off
none but very young ones, and his opportunities for capturing them are
somewhat limited. Neither are many toads and frogs eaten, and as frogs are
of no great practical value, their destruction is not a serious matter;
but toads are very useful, and their consumption, so far as it goes, must
be counted against crow. Turtles, crayfishes, and snails, of which he eats
quite a large number, may be considered neutral, while mice may be counted
to his credit.
In his insect food, however, the crow makes amends for sins in the rest of
his dietary, although even here the first item is against him. Predaceous
beetles are eaten in some numbers throughout the season, but the number
is not great. May beetles, "dor-bugs," or June bugs, and others of the
same family, constitute the principal food during spring and early summer,
and are fed to the young in immense quantities. Other beetles, nearly all
of a noxious character, are eaten to a considerable extent. Grasshoppers
are first taken in May, but not in large numbers until August, when, as
might be expected, they form the leading article of diet, showing that
the crow is no exception to the general rule that most birds subsist,
to a large extent, upon grasshoppers in the month of August. Many bugs,
some caterpillars, mostly cutworms, and some spiders are also eaten--all
of them either harmful or neutral in their economic relations. Of the
insect diet Mr. E. A. Schwarz says: "The facts, on the whole, speak
overwhelmingly in favor of the crow."
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