The monarch butterfly is an iconic migratory insect whose population size has declined dramatically in the past 30 years and is now listed as endangered in Canada. Habitat loss, climate change, and reduced environmental protections have created critical gaps in the conservation of the species. Citizen science (or community science) platforms like eButterfly can provide a powerful solution, engaging thousands of volunteers to collect high-quality data on monarch distribution, migration timing, and habitat use that would be difficult for professional scientists to gather alone.

This case study demonstrates that eButterfly adheres closely to established best practices for community science and contributes directly to peer-reviewed research that is used to inform conservation decision-making. Beyond research, it fosters public engagement, builds ecological awareness, and supports long-term species monitoring. Expanding funding and integrating community science with professional research can strengthen conservation efforts and help ensure the survival of this extraordinary species.