The sex of cabbage butterflies can be readily determined. In addition to the dark spot at the outer "corner" of the forewing, upper (dorsal) side, females have two dark spots mid-wing, one above the other; males have only one. An interesting, easily observed behavior of the Cabbage White Butterfly is the spiral flight. When a male shows interest in a female that has already mated, she indicates her lack of interest by rising, the two butterflies circling each other, until the male loses interest and drops back to the ground. The female then comes down more slowly and resumes egg-laying (Stokes 1983).

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