Monarch Alert is a study of patterns of fall migration, wintering activity, and spring dispersal by monarch butterflies in western North America. The project includes:

• Study of seasonal abundance and habitat use in the northern half of their winter range
  (see map)
• Tagging of monarchs at habitats in four counties (see about tagging).
  

The tagging study will provide information about movement patterns at several spatial scales and with reference to several possible causal factors. Some of these factors include weather patterns, butterfly condition, and landscape constraints.

California’s monarch overwintering habitats, with butterflies sometimes numbering over 100,000, are a valued natural resource. While conservation efforts are ongoing, further research is needed for a more comprehensive understanding of their population dynamics.

Have you found a tagged butterfly?  Call toll-free 1-877-897-7740 mailbox #7.