City-Dwelling Monarch Butterflies Stay Put (IMAGE)
Caption
Professor Elizabeth Crone, Department of Evolution and Ecology, checks a non-native milkweed in the San Francisco Bay Area for monarch butterfly eggs and caterpillars. Known for long-distance migrations, monarchs have also established year-round populations in suburban areas. A study by Crone and colleagues shows that these year-round populations are separate from the migrating population and therefore do not pose a problem for monarch conservation.
Credit
Sylvie Finn
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