These are among the estimated 57 million monarchs now overwintering in Mexico. These butterflies must survive winter, migrate north in the spring, and then serve as the seed stock for future generations.
Estela Romero
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| Seed Stock: 57 Million These are among the estimated 57 million monarchs now overwintering in Mexico. These butterflies must survive winter, migrate north in the spring, and then serve as the seed stock for future generations.
Estela Romero
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