Letters: How to Help Monarch Butterflies
Two readers discuss their efforts to support the migration of wild monarchs.
Jul 28, 2019
2 minutes
Monarch Butterflies Reared in Captivity Lack a Crucial Ability
Wild monarchs have faced a steep decline in recent decades, Ed Yong wrote in June. Some North American companies and hobbyists breed stocks of the insect, many with good intentions of bolstering the monarchs’ numbers. But , monarchs raised in captivity tend to
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