quiet-the-power-of-introverts-in-a-world-that-cant-stop-talking-susan-cain

Roosevelts as surely as grazing herds
depend on their sensitive antelopes.
In addition to “shy” and “bold” animals,
and to “fast” and “slow” ones, biologists
sometimes speak of the “hawk”
and “dove” members of a given species.
Great tit birds, for example, some of
whom are much more aggressive than
others, often act like case studies in an
international relations class. These
birds feed on beech tree nuts, and in
years when nuts are scarce, the hawkish
female birds do better, just as you’d
expect, because they’re quick to
challenge nut-eating competitors to a
duel. But in seasons when there are
plenty of beech nuts to go around, the
female “doves”—who, incidentally,
tend to make more attentive mothers—do
better than the “hawks,” because
the hawks waste time and bodily
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