John Ball Zoo Fights for Great Lakes’ Rarest Butterflies
2025-07-16
Butterfly populations are in decline across the continental U.S., dropping by 22% between 2000 and 2020 according to a study published in the journal Science. Almost a third of the 342 species studied have seen their numbers fall by more than half. To help combat this, the John Ball Zoo in Grand Rapids, Michigan launched its Great Lakes Rare Butterfly Program in 2021 to protect the region’s most threatened species.
Great Lakes Now
https://www.greatlakesnow.org/2025/07/john-ball-zoo-fights-for-great-lakes-rarest-butterflies/
been laid in the sediment of the lake. Following analysis of the samples collected, we are please to report that no evidence of spiny waterflea were found which includes not finding any eggs!
boat launches! Get involved today!
which topics they are interested in monitoring. The information gathered by volunteers is even used by Wisconsin Department of Natural Resources and university biologists and researchers, UW-Extension, and other interested individuals in projects that work to improve your lake! Help keep track of changes in your lake while being near your favorite Winnebago lake! This opportunity is easy to do from both the shoreline as well as your boat!
Extension Lakes. Volunteers met at different local rendezvous sites across the state to learn how to identify AIS such as Eurasian watermilfoil, purple loosestrife, and New Zealand mudsnails, and then searched for them in the field at pre-
selected locations. Initially focused on rivers and streams, Snapshot Day has expanded to include lakes and wetlands. Findings from Snapshot Day are uploaded to the statewide water quality database, SWIMS, where they can be used to track the spread of invasive species and develop management plans.
Snapshot Day’s community-based science approach maximizes the number of sites being checked across the state, and the free event allows volunteers to learn about their local waters and how to keep them healthy. As one volunteer stated, “I enjoyed the hands on learning approach. It was helpful to have well informed guides and samples of the invasive species to get a close look at. Once we had a good understanding of what to look for, it was fun to go out and collect samples of what we were finding.”
