Population increased 64% this winter compared to the same period in 2025.
Largest area covered by monarch butterflies since 2018.
Threats include habitat loss, climate crisis, and pesticides.
Strategic angle: The insects covered its largest area since 2018, despite threats from habitat loss, climate crisis and pesticides.
Population increased 64% this winter compared to the same period in 2025.
Largest area covered by monarch butterflies since 2018.
Threats include habitat loss, climate crisis, and pesticides.