Life, death, sex and butterflies in Michoacan
The migration of the North American monarch butterfly between Mexico and Canada is a journey of life, death and rebirth, a testament to the tenacity and ingenuity with which one generation ensures that life continues after it has alighted on its last leaf, sprig, twig, or patch of soil, the desperate flutter of wings slowing down until it lies still and dead in the sunlight, its brilliant raiment of orange-red gradually fading to the sepia tone of an old photograph.