Help advance science and conservation of butterflies

From the rarest butterflies to the most common, your sightings contribute to conservation decisions, scientific knowledge, education, and more. Help us understand when and where butterflies occur. All you have to do is watch and report your butterfly sightings.

LATEST NEWS view all


eButterfly Taxonomy Updated

Months in the making, we’ve just made substantial improvements and corrections to the taxonomic backbone for eButterfly. This will drastically improve the user experience when entering checklists and exploring data. Learn about all the details…


eButterflying Your 4th of July Count

The 4th of July Butterfly Count season is here! Each year, hundreds of butterfly enthusiasts participate in a cooperative effort to count butterflies within established 15-mile diameter survey circles. Most counts depend on the efforts of multiple parties, with each individual or team checking different parts of the survey circle, then combining their counts into a final count total. These tallies are then used to compare between years. The counts are an important and long-running survey that help understand changes in butterfly populations at large scales. Your checklists can also be important for eButterfly too!


New Feature Alert: Project Pages

Our new eButterfly Projects tool allows you to easily and quickly create a hub for your event, club, class, or organization. An eButterfly Project creates a space for you that pools observations of eButterfly users together. You can automatically include all of the checklists and observations that fit the places, taxa, users, or dates that you specify. Whether you’re starting a community science effort, creating a home for your user group, or running a butterfly bioblitz; eButterfly Projects is the new tool for you.