1. Citizen science observations of monarch butterfly overwintering in the southern United States;Howard;Psyche J Entomol,2010
2. Overwintering of monarch butterflies as a breeding colony in southwestern Arizona;Funk;J Lepidopterists Soc,1968
3. A study of a continuously breeding population of Danaus plexippus in southern California compared to a migratory population and its significance in the study of insect movement;Urquhart;J Res Lepidoptera,1970
4. Resilience or catastrophe? A possible state change for monarch butterflies in western North America;Crone;Ecol Lett,2021
5. First population study on winter breeding monarch butterflies, Danaus plexippus (Lepidoptera: Nymphalidae) in the urban south bay of San Francisco, California;James;Insects,2021