The story of the butterfly(This is my second poem)

When the winter pass the day to spring
The warmth of the sun many a flower brings,
The caterpillars well fed stirs in tune,
Covers themselves up in mysterious cocoon.
Only to reappear transformed as a butterflies,
Its heart flutters for where the nectar Lies.
They fly away in playful swarms,
The leaves cry behind which had fed the little worms.
Will the Buttefly find its perfect match,
Eternal question which has a little catch!