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The Monarch Grove Sanctuary is an urban nature preserve in Pacific Grove, California. It protects the monarch butterflies that winter in Pacific Grove arriving in October. It is maintained by a volunteer crew. [2] About 12–16,000 butterflies stayed at the sanctuary during the 2022-23 winter, making it the fourth largest of its type in ...
The U.S. state of California has instituted numerous conservation programs, policies, laws, reserves and Habitat restoration projects throughout the state to facilitate the health and migration of the western population of the monarch butterfly (Danaus plexippus). The population of western monarchs require very different breeding and ...
1:10 p.m. Oct. 30, 2023: An earlier version of this article stated that the California Bumble Bee Atlas project is a Xerces-supported group in Riverside. The project, based in Riverside, is run by ...
The number of western monarch butterflies overwintering in California dropped by 30% last year, likely due to how wet it was, researchers said Tuesday. Volunteers who visited sites in California ...
The best-known lepidopteran migration is that of the eastern population of the monarch butterfly which migrates from southern Canada to wintering sites in central Mexico. In late winter/early spring, the adult monarchs leave the Transvolcanic mountain range in Mexico for a more northern climate.
Monarchs from across the West migrate annually to about 100 wintering sites dotting central California's Pacific coast. One of the best-known wintering places is the Monarch Grove Sanctuary, a ...
Volunteers who visited sites in California and Arizona around Thanksgiving tallied more than 230,000 butterflies, compared to 330,000 in 2022, according to the Xerces Society, an environmental nonprofit that focuses on the conservation of invertebrates.
Thirty years ago, there were millions of western monarch butterflies in California. Last winter, volunteers counted just 2,000.