  We aim to give a reliable estimate of the number of flaring giant stars in
the Kepler field. By analyzing the flaring activity of these stars we explore
their flare statistics and the released flare energies. The role of oscillation
in suppressing magnetic activity is also investigated. On a sample of flaring
giant stars we search for flaring specialities which may be associated with the
giant nature. We search for flares using the full K1 data on a sample of 706
stars compiled from two lists of flaring giants found in the literature. In the
end, we confirm only 61 stars as flaring giants. Among these 61 flaring giants
we found only six which also show oscillations; we suggest that a large
fraction of the 61 flaring giants are members of spectroscopic binaries which
are proven already for 11. Tests are carried out to correct the detection bias
at low flare energies for a subsample of 19 further studied, frequently flaring
stars. For these 19 stars flare energy distributions and flare frequency
diagrams (FFDs) are constructed. The number of detected flares on giant stars
correlate only weakly with the rotational periods. The 61 confirmed flaring
giant stars make up only about 0.3% of the entire giant star population in the
Kepler database, in contrast with previous estimates of about an order higher
percentage. No strong correlation was found between the stellar properties and
the flaring characteristics. The wide scale of the flaring specialities are
hardly related to the giant nature, if at all. This, together with the finding
that the observed flare durations correlate with flare energies, regardless of
the flare energy level and stellar luminosity class, suggest common background
physics in flaring stars, or in other words, a general scaling effect behind.
