Decline of monarch butterflies overwintering in Mexico: is the migratory phenomenon at risk? – BROWER – 2011 – Insect Conservation and Diversity – Wiley Online Library

Decline of monarch butterflies overwintering in Mexico: is the migratory phenomenon at risk? – BROWER – 2011 – Insect Conservation and Diversity – Wiley Online Library.

18 March 2012 – According to Journey North, the monarch butterfly has left Mexico and may have traveled north by 1,000 miles. Read the science behind the article about the decline of monarch butterflies. We need milkweed to establish a pollinating corridor across the United States.

Too warm in Northwest Wisconsin week of March 11. Three people told me they saw monarch butterflies. How can this be? There are no milkweed plants up yet.