Butterflies are in decline across North America, a look at the Western Monarch | Hacker News

North American butterfly numbers are falling, with western monarchs getting particular attention.

Discussion points to habitat loss, pesticide exposure, and changing lawn practices as likely contributors.

Some users are responding by planting milkweed to help monarchs and other pollinators.

Because butterflies are key pollinators and ecosystem indicators, their decline may signal broader environmental damage.