Pesticides, Severe Weather, Land Development Threaten Butterfly Migration
Friday, August 19, 2011 - 12:30
in Biology & Nature
Hamilton College Professor of Biology Ernest H. Williams co-authored an article presenting the results of a study showing that the number of monarchs overwintering on the mountains in Mexico has declined significantly over the past 17 years. He and his co-authors feel that this decline calls into question the long-term survival of the monarchs' migratory phenomenon.
