SANTA CRUZ — Conservationists are concerned that western monarch butterflies may be teetering ... with 1,406 monarchs at Lighthouse Field State Beach, 1,400 at Natural Bridges State Beach ...

In the summertime, Natural ... of monarch butterflies flutter into the area's milkweed plants and eucalyptus trees (in 2016, an estimated 8,000 butterflies overwintered here). The state beach ...

The monarch butterflies start showing up as fall ... boardwalk that runs through the butterfly preserve at Natural Bridges State Beach, which is accessible by strollers and wheelchairs.

Spectators use binoculars and cell phones to view monarch butterflies up-close at the Pismo Beach Monarch Butterfly Grove in January this year. Randy De La Peña, Contributor Buy Now ...

(Getty Images)| Santa Cruz's Natural Bridges State Beach is home to an ... as well as migrating whales. The beach also houses a monarch butterfly preserve, not to mention the rock formation ...