MaryAnn Lepp noticed a significant increase in monarch butterflies undergoing their transformation in her garden, with 20 caterpillars feeding on her swamp milkweed in just one day this week. She is one of many Canadian monarch enthusiasts observing a rise in backyard milkweed patches thriving due to wet and hot conditions on the Prairie this summer.
The surge in monarch activity has been documented by butterfly enthusiasts on social media groups such as Manitoba Monarch Mission, although experts cannot definitively attribute the increase to favorable weather conditions. Nevertheless, the abundance of anecdotal reports of caterpillars, chrysalises, and monarch butterflies is seen as a positive sign for the federally endangered species known for their annual migration between Canada and Mexico.
Marika Olynyk, curator of the Living Prairie Museum, noted a significant presence of monarchs in Winnipeg this year, with consistent sightings of caterpillars, chrysalises, and butterflies throughout the summer. The museum’s tall grass prairie preserve, featuring various native plants including milkweed varieties, serves as a hub for pollinators like monarch butterflies.
Despite efforts by individuals like Lepp to plant milkweed and native wildflowers, these species remain limited due to habitat loss caused by the conversion of native grasslands into farmland. Monarchs, in particular, are facing threats due to diminishing habitats, with the loss of tallgrass prairies across North America exacerbating the situation.
The Committee on the Status of Endangered Wildlife in Canada designated monarchs as endangered in 2016, emphasizing the need for enhanced protection measures. The federal government subsequently classified the monarch as endangered in December 2023, making it illegal to harm or capture monarchs on federal lands at any stage of development.
While efforts to conserve monarch populations are ongoing, challenges persist in ensuring their sustainability. Laura Burns, conservation programs manager at Assiniboine Park Zoo, highlighted the precarious situation of the Poweshiek skipperling, a critically endangered butterfly species struggling on the brink of extinction. The zoo’s breeding and release programs aim to bolster the population of this species, with recent observations indicating a positive trend towards recovery.
In addition to monarch conservation initiatives, zoo staff plan to track monarchs’ migration south to Mexico by attaching radio transmitters to adults this fall. Enthusiasts like Lepp are dedicated to safeguarding caterpillars and chrysalises, underscoring the importance of preserving biodiversity and fostering a harmonious relationship with nature.