Ah! The contrast between the shortening days of autumn, when the mornings are cool, damp and misty and the nights long and cold, with those recently departed long summer days. Between the newly-born baby and her stocky older brother. Between …. well the list could go on. You can offer us weighty arguments, light-hearted images… whatever you like.
This photo simply contrasts the bright wings of the butterfly with the green leaves on which it’s momentarily resting.