Monarch butterflies surge across America in good year
The monarch population rises nationwide with good moisture and widespread food plants helping caterpillars, while threats like Bt corn and habitat loss persist. Sightings include 4,000 monarchs near Lake Rathbun and a 25,000-strong coastal flock off Massachusetts. The species faces risks from logging in Michoacan and climate factors, yet observers remain hopeful for a long fall flight.
MENTIONED IN THIS ARTICLE
Des Moines
Iowa
Mexico
California
Donald Lewis
Iowa State University
Lewis
Lake Rathbun
Massachusetts
North American Butterfly Association
Canada
United States
Cornell Univer
Pioneer
Hi-Bred International
Doyle Karr
Jeffrey Glassberg
North America
Michoacan
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