Monarch Butterfly Breeding Activity Documented in Cozumel for Third Consecutive Year

Cozumel, Quintana Roo — The monarch butterfly may be finding conditions to reproduce at different times of the year on Cozumel, after the Cozumel Parks and Museums Foundation (FPMC) documented a female laying eggs on a host plant inside the city’s urban area.

The finding, recorded during the third consecutive year of monitoring of the species (Danaus plexippus), raises new questions about the island’s role in the life cycle of the emblematic insect.

Rafael Chacón, a biologist and the foundation’s director of conservation and environmental education, said the record follows the January 2026 discovery, when the institution first documented monarch butterfly eggs on host plants in the city.

Follow-up monitoring has also identified larvae, chrysalises and adult specimens, allowing researchers to gather evidence of different stages of the species’ development.

Citizen participation

The work involves collaboration with Flower Child and the organization Alas Mayas, whose efforts help broaden knowledge of the monarch’s presence on the island and encourage public participation in its conservation.

Although the butterfly is known for migrating from eastern North America to hibernation forests in central Mexico, some populations may find favorable conditions to stay and reproduce in territories such as the Yucatan Peninsula and the islands of Quintana Roo.

The new discovery poses two questions for researchers: whether reproduction occurs recurrently on Cozumel, or whether migrating specimens take advantage of the island’s environmental conditions to lay their eggs as they pass through.