This work is based on the butterfly migration to Mexico. The monarch butterfly has the longest migration trajectory of any insect, close to a travel of 5000km. The butterfly that starts the journey never arrives at the destination, each journey can take up to 5 generations to complete. The flight starts in August and they arrive in November.
Once the butterflies have arrived and the temperatures are too cold they sleep in clusters with their wings closed. The weight of the cluster pulls the trees down and create drop like shapes. In 1996/97 the butterflies could be found in about 18 hectares of forest in the states of Mexico and Michoacán. In 2018, only 2.48 hectares had monarch colonies.