Usually the most common butterfly (male). It has a quite typical flight.
The caterpiller feeds on grasses, preferable during night time, and is the overwintering stage
In females, the eyes are also visible at the upper parts.
Very old, worn-out individuals are not unusual.
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The female drops her eggs one by one in the vegetation where they fall on the soil surface.
Being very common, there is a serious risk for predation.