Dana Kobilinsky

Monarchs prefer pesticide-free milkweed

Milkweed covered in pesticide cocktails repels egg-laying monarchs and their larvae — but the extent of chemical use in some areas may leave the butterflies with no choice. “Their populations have been reduced in the

Dana Kobilinsky

Captive-bred monarchs don’t migrate

When either breeders or eager citizens raise monarch butterflies, they may be raising individuals that can’t migrate, according to new research. The idea to study the migration patterns of captive-bred monarchs (Danaus plexippus) came about

Conservation News

Mowing for monarchs

It may seem like taking a weed wacker to perennial grasslands where monarch butterflies (Danaus plexippus) feed on their only food source, milkweed, is not the best idea. But researchers recently found the opposite may

Conservation News

Fall of the monarchs

Over the last two decades, the number of monarch butterflies (Danaus plexippus) in North America has plummeted by approximately 90 percent — in part due to winter habitat loss in Mexico and increased herbicide use in the Midwest.