Ventura is the southernmost city on the California coast where
high 100's to low-mid 1000's of monarchs can reliably be found
clustering at multiple cluster groves in mid January most years:
Harbor Blvd. cluster grove: (about 4,500 monarchs clustered)
http://www.learner.org/jnorth/sightings ... 1358096403
Ocean Ave Park cluster grove: (about 700 monarchs clustered)
http://www.learner.org/jnorth/sightings ... 1358184747
Arrundel Barranca cluster grove: (about 1,000 monarchs clustered)
http://www.learner.org/jnorth/sightings ... 1358184494
Camino Real Park cluster grove: (about 5,000 monarchs clustered)
http://www.learner.org/jnorth/sightings ... 1358267979