ScienceDaily: Insect News
Beyond milkweed: Monarchs face habitat, nectar threats
Posted: 22 Apr 2016 01:31 PM PDT
In the face of scientific dogma that faults the population decline of monarch butterflies on a lack of milkweed, herbicides and genetically modified crops, a new study casts wider blame: sparse autumnal nectar sources, weather and habitat fragmentation.