A new study by UC - Davis illuminates the natal origins of monarch butterflies overwintering in California. (westernmonarchcount.org)
Populations of monarch butterflies are still far below historic numbers PORTLAND, Ore., December 14, 2015 — First reports from monarch overwintering sites in California surveyed during the Xerces Society's Western Monarch Thanksgiving Count suggest that 2015 may have been a... (westernmonarchcount.org)
The wings of western monarch butterflies overwintering at four California sites yielded clues to to their areas of origin. (sciencedaily.com)