Fir trees

A Monarch butterfly rests on the finger of a woman in the Amanalco de Becerra sanctuary, on the mountains near the extinct Nevado de Toluca volcano, in Mexico, Thursday, Feb. 14, 2019. The monarch butterfly population, like that of other insects, fluctuates widely depending on a variety of factors, but scientists say the recoveries after each big dip tend to be smaller, suggesting an overall declining trend. (AP Photo/ Marco Ugarte)
February 15, 2019 - 12:43 pm
AMANALCO DE BECERRA, Mexico (AP) — For years, park rangers and conservationists working around Mexico's Nevado de Toluca volcano chased rumors of a monarch butterfly colony that wintered high in a forest of oyamel firs in some corner of the 132,000-acre (53,419-hectare) national reserve. Local...
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