YubaNet on Nostr: Millions of western monarchs used to return to overwintering groves in California ...

Millions of western monarchs used to return to overwintering groves in California every winter. In the 1980s, an estimated 4.5 million butterflies migrated to the coast annually. However, the population plummeted in recent decades due to habitat loss, pesticides, disease, and, increasingly, climate change. https://yubanet.com/california/as-annual-western-monarch-butterfly-count-gets-underway-new-analysis-highlights-importance-of-california-state-parks-for-species/