https://www.mercurynews.com/2020/01/23/is-this-the-end-of-western-monarch-butterflies/

The number of western monarch butterflies has hit a historic low for the second year in a row, raising fears that California’s populations are in peril and may not recover.

Only 29,418 monarchs were counted at 240 sites along the state’s coast, according to the annual Thanksgiving tally released Thursday by the Xerces Society for Invertebrate Conservation, a nonprofit that conducts the annual census.